 java.lang.Object

 java.util.Arrays

public class Arrays extends Object
This class contains various methods for manipulating arrays (such as sorting and searching). This class also contains a static factory that allows arrays to be viewed as lists.The methods in this class all throw a
NullPointerException
, if the specified array reference is null, except where noted.The documentation for the methods contained in this class includes brief descriptions of the implementations. Such descriptions should be regarded as implementation notes, rather than parts of the specification. Implementors should feel free to substitute other algorithms, so long as the specification itself is adhered to. (For example, the algorithm used by
sort(Object[])
does not have to be a MergeSort, but it does have to be stable.)This class is a member of the Java Collections Framework.
 Since:
 1.2


Method Summary
All Methods Static Methods Concrete Methods Modifier and Type Method Description static <T> List<T>
asList(T... a)
Returns a fixedsize list backed by the specified array.static int
binarySearch(byte[] a, byte key)
Searches the specified array of bytes for the specified value using the binary search algorithm.static int
binarySearch(byte[] a, int fromIndex, int toIndex, byte key)
Searches a range of the specified array of bytes for the specified value using the binary search algorithm.static int
binarySearch(char[] a, char key)
Searches the specified array of chars for the specified value using the binary search algorithm.static int
binarySearch(char[] a, int fromIndex, int toIndex, char key)
Searches a range of the specified array of chars for the specified value using the binary search algorithm.static int
binarySearch(double[] a, double key)
Searches the specified array of doubles for the specified value using the binary search algorithm.static int
binarySearch(double[] a, int fromIndex, int toIndex, double key)
Searches a range of the specified array of doubles for the specified value using the binary search algorithm.static int
binarySearch(float[] a, float key)
Searches the specified array of floats for the specified value using the binary search algorithm.static int
binarySearch(float[] a, int fromIndex, int toIndex, float key)
Searches a range of the specified array of floats for the specified value using the binary search algorithm.static int
binarySearch(int[] a, int key)
Searches the specified array of ints for the specified value using the binary search algorithm.static int
binarySearch(int[] a, int fromIndex, int toIndex, int key)
Searches a range of the specified array of ints for the specified value using the binary search algorithm.static int
binarySearch(long[] a, int fromIndex, int toIndex, long key)
Searches a range of the specified array of longs for the specified value using the binary search algorithm.static int
binarySearch(long[] a, long key)
Searches the specified array of longs for the specified value using the binary search algorithm.static int
binarySearch(short[] a, int fromIndex, int toIndex, short key)
Searches a range of the specified array of shorts for the specified value using the binary search algorithm.static int
binarySearch(short[] a, short key)
Searches the specified array of shorts for the specified value using the binary search algorithm.static int
binarySearch(Object[] a, int fromIndex, int toIndex, Object key)
Searches a range of the specified array for the specified object using the binary search algorithm.static int
binarySearch(Object[] a, Object key)
Searches the specified array for the specified object using the binary search algorithm.static <T> int
binarySearch(T[] a, int fromIndex, int toIndex, T key, Comparator<? super T> c)
Searches a range of the specified array for the specified object using the binary search algorithm.static <T> int
binarySearch(T[] a, T key, Comparator<? super T> c)
Searches the specified array for the specified object using the binary search algorithm.static int
compare(boolean[] a, boolean[] b)
Compares twoboolean
arrays lexicographically.static int
compare(boolean[] a, int aFromIndex, int aToIndex, boolean[] b, int bFromIndex, int bToIndex)
Compares twoboolean
arrays lexicographically over the specified ranges.static int
compare(byte[] a, byte[] b)
Compares twobyte
arrays lexicographically.static int
compare(byte[] a, int aFromIndex, int aToIndex, byte[] b, int bFromIndex, int bToIndex)
Compares twobyte
arrays lexicographically over the specified ranges.static int
compare(char[] a, char[] b)
Compares twochar
arrays lexicographically.static int
compare(char[] a, int aFromIndex, int aToIndex, char[] b, int bFromIndex, int bToIndex)
Compares twochar
arrays lexicographically over the specified ranges.static int
compare(double[] a, double[] b)
Compares twodouble
arrays lexicographically.static int
compare(double[] a, int aFromIndex, int aToIndex, double[] b, int bFromIndex, int bToIndex)
Compares twodouble
arrays lexicographically over the specified ranges.static int
compare(float[] a, float[] b)
Compares twofloat
arrays lexicographically.static int
compare(float[] a, int aFromIndex, int aToIndex, float[] b, int bFromIndex, int bToIndex)
Compares twofloat
arrays lexicographically over the specified ranges.static int
compare(int[] a, int[] b)
Compares twoint
arrays lexicographically.static int
compare(int[] a, int aFromIndex, int aToIndex, int[] b, int bFromIndex, int bToIndex)
Compares twoint
arrays lexicographically over the specified ranges.static int
compare(long[] a, int aFromIndex, int aToIndex, long[] b, int bFromIndex, int bToIndex)
Compares twolong
arrays lexicographically over the specified ranges.static int
compare(long[] a, long[] b)
Compares twolong
arrays lexicographically.static int
compare(short[] a, int aFromIndex, int aToIndex, short[] b, int bFromIndex, int bToIndex)
Compares twoshort
arrays lexicographically over the specified ranges.static int
compare(short[] a, short[] b)
Compares twoshort
arrays lexicographically.static <T extends Comparable<? super T>>
intcompare(T[] a, int aFromIndex, int aToIndex, T[] b, int bFromIndex, int bToIndex)
Compares twoObject
arrays lexicographically over the specified ranges.static <T> int
compare(T[] a, int aFromIndex, int aToIndex, T[] b, int bFromIndex, int bToIndex, Comparator<? super T> cmp)
Compares twoObject
arrays lexicographically over the specified ranges.static <T extends Comparable<? super T>>
intcompare(T[] a, T[] b)
Compares twoObject
arrays, within comparable elements, lexicographically.static <T> int
compare(T[] a, T[] b, Comparator<? super T> cmp)
Compares twoObject
arrays lexicographically using a specified comparator.static int
compareUnsigned(byte[] a, byte[] b)
Compares twobyte
arrays lexicographically, numerically treating elements as unsigned.static int
compareUnsigned(byte[] a, int aFromIndex, int aToIndex, byte[] b, int bFromIndex, int bToIndex)
Compares twobyte
arrays lexicographically over the specified ranges, numerically treating elements as unsigned.static int
compareUnsigned(int[] a, int[] b)
Compares twoint
arrays lexicographically, numerically treating elements as unsigned.static int
compareUnsigned(int[] a, int aFromIndex, int aToIndex, int[] b, int bFromIndex, int bToIndex)
Compares twoint
arrays lexicographically over the specified ranges, numerically treating elements as unsigned.static int
compareUnsigned(long[] a, int aFromIndex, int aToIndex, long[] b, int bFromIndex, int bToIndex)
Compares twolong
arrays lexicographically over the specified ranges, numerically treating elements as unsigned.static int
compareUnsigned(long[] a, long[] b)
Compares twolong
arrays lexicographically, numerically treating elements as unsigned.static int
compareUnsigned(short[] a, int aFromIndex, int aToIndex, short[] b, int bFromIndex, int bToIndex)
Compares twoshort
arrays lexicographically over the specified ranges, numerically treating elements as unsigned.static int
compareUnsigned(short[] a, short[] b)
Compares twoshort
arrays lexicographically, numerically treating elements as unsigned.static boolean[]
copyOf(boolean[] original, int newLength)
Copies the specified array, truncating or padding withfalse
(if necessary) so the copy has the specified length.static byte[]
copyOf(byte[] original, int newLength)
Copies the specified array, truncating or padding with zeros (if necessary) so the copy has the specified length.static char[]
copyOf(char[] original, int newLength)
Copies the specified array, truncating or padding with null characters (if necessary) so the copy has the specified length.static double[]
copyOf(double[] original, int newLength)
Copies the specified array, truncating or padding with zeros (if necessary) so the copy has the specified length.static float[]
copyOf(float[] original, int newLength)
Copies the specified array, truncating or padding with zeros (if necessary) so the copy has the specified length.static int[]
copyOf(int[] original, int newLength)
Copies the specified array, truncating or padding with zeros (if necessary) so the copy has the specified length.static long[]
copyOf(long[] original, int newLength)
Copies the specified array, truncating or padding with zeros (if necessary) so the copy has the specified length.static short[]
copyOf(short[] original, int newLength)
Copies the specified array, truncating or padding with zeros (if necessary) so the copy has the specified length.static <T> T[]
copyOf(T[] original, int newLength)
Copies the specified array, truncating or padding with nulls (if necessary) so the copy has the specified length.static <T,U> T[]
copyOf(U[] original, int newLength, Class<? extends T[]> newType)
Copies the specified array, truncating or padding with nulls (if necessary) so the copy has the specified length.static boolean[]
copyOfRange(boolean[] original, int from, int to)
Copies the specified range of the specified array into a new array.static byte[]
copyOfRange(byte[] original, int from, int to)
Copies the specified range of the specified array into a new array.static char[]
copyOfRange(char[] original, int from, int to)
Copies the specified range of the specified array into a new array.static double[]
copyOfRange(double[] original, int from, int to)
Copies the specified range of the specified array into a new array.static float[]
copyOfRange(float[] original, int from, int to)
Copies the specified range of the specified array into a new array.static int[]
copyOfRange(int[] original, int from, int to)
Copies the specified range of the specified array into a new array.static long[]
copyOfRange(long[] original, int from, int to)
Copies the specified range of the specified array into a new array.static short[]
copyOfRange(short[] original, int from, int to)
Copies the specified range of the specified array into a new array.static <T> T[]
copyOfRange(T[] original, int from, int to)
Copies the specified range of the specified array into a new array.static <T,U> T[]
copyOfRange(U[] original, int from, int to, Class<? extends T[]> newType)
Copies the specified range of the specified array into a new array.static boolean
deepEquals(Object[] a1, Object[] a2)
Returnstrue
if the two specified arrays are deeply equal to one another.static int
deepHashCode(Object[] a)
Returns a hash code based on the "deep contents" of the specified array.static String
deepToString(Object[] a)
Returns a string representation of the "deep contents" of the specified array.static boolean
equals(boolean[] a, boolean[] a2)
Returnstrue
if the two specified arrays of booleans are equal to one another.static boolean
equals(boolean[] a, int aFromIndex, int aToIndex, boolean[] b, int bFromIndex, int bToIndex)
Returns true if the two specified arrays of booleans, over the specified ranges, are equal to one another.static boolean
equals(byte[] a, byte[] a2)
Returnstrue
if the two specified arrays of bytes are equal to one another.static boolean
equals(byte[] a, int aFromIndex, int aToIndex, byte[] b, int bFromIndex, int bToIndex)
Returns true if the two specified arrays of bytes, over the specified ranges, are equal to one another.static boolean
equals(char[] a, char[] a2)
Returnstrue
if the two specified arrays of chars are equal to one another.static boolean
equals(char[] a, int aFromIndex, int aToIndex, char[] b, int bFromIndex, int bToIndex)
Returns true if the two specified arrays of chars, over the specified ranges, are equal to one another.static boolean
equals(double[] a, double[] a2)
Returnstrue
if the two specified arrays of doubles are equal to one another.static boolean
equals(double[] a, int aFromIndex, int aToIndex, double[] b, int bFromIndex, int bToIndex)
Returns true if the two specified arrays of doubles, over the specified ranges, are equal to one another.static boolean
equals(float[] a, float[] a2)
Returnstrue
if the two specified arrays of floats are equal to one another.static boolean
equals(float[] a, int aFromIndex, int aToIndex, float[] b, int bFromIndex, int bToIndex)
Returns true if the two specified arrays of floats, over the specified ranges, are equal to one another.static boolean
equals(int[] a, int[] a2)
Returnstrue
if the two specified arrays of ints are equal to one another.static boolean
equals(int[] a, int aFromIndex, int aToIndex, int[] b, int bFromIndex, int bToIndex)
Returns true if the two specified arrays of ints, over the specified ranges, are equal to one another.static boolean
equals(long[] a, int aFromIndex, int aToIndex, long[] b, int bFromIndex, int bToIndex)
Returns true if the two specified arrays of longs, over the specified ranges, are equal to one another.static boolean
equals(long[] a, long[] a2)
Returnstrue
if the two specified arrays of longs are equal to one another.static boolean
equals(short[] a, int aFromIndex, int aToIndex, short[] b, int bFromIndex, int bToIndex)
Returns true if the two specified arrays of shorts, over the specified ranges, are equal to one another.static boolean
equals(short[] a, short[] a2)
Returnstrue
if the two specified arrays of shorts are equal to one another.static boolean
equals(Object[] a, int aFromIndex, int aToIndex, Object[] b, int bFromIndex, int bToIndex)
Returns true if the two specified arrays of Objects, over the specified ranges, are equal to one another.static boolean
equals(Object[] a, Object[] a2)
Returnstrue
if the two specified arrays of Objects are equal to one another.static <T> boolean
equals(T[] a, int aFromIndex, int aToIndex, T[] b, int bFromIndex, int bToIndex, Comparator<? super T> cmp)
Returns true if the two specified arrays of Objects, over the specified ranges, are equal to one another.static <T> boolean
equals(T[] a, T[] a2, Comparator<? super T> cmp)
Returnstrue
if the two specified arrays of Objects are equal to one another.static void
fill(boolean[] a, boolean val)
Assigns the specified boolean value to each element of the specified array of booleans.static void
fill(boolean[] a, int fromIndex, int toIndex, boolean val)
Assigns the specified boolean value to each element of the specified range of the specified array of booleans.static void
fill(byte[] a, byte val)
Assigns the specified byte value to each element of the specified array of bytes.static void
fill(byte[] a, int fromIndex, int toIndex, byte val)
Assigns the specified byte value to each element of the specified range of the specified array of bytes.static void
fill(char[] a, char val)
Assigns the specified char value to each element of the specified array of chars.static void
fill(char[] a, int fromIndex, int toIndex, char val)
Assigns the specified char value to each element of the specified range of the specified array of chars.static void
fill(double[] a, double val)
Assigns the specified double value to each element of the specified array of doubles.static void
fill(double[] a, int fromIndex, int toIndex, double val)
Assigns the specified double value to each element of the specified range of the specified array of doubles.static void
fill(float[] a, float val)
Assigns the specified float value to each element of the specified array of floats.static void
fill(float[] a, int fromIndex, int toIndex, float val)
Assigns the specified float value to each element of the specified range of the specified array of floats.static void
fill(int[] a, int val)
Assigns the specified int value to each element of the specified array of ints.static void
fill(int[] a, int fromIndex, int toIndex, int val)
Assigns the specified int value to each element of the specified range of the specified array of ints.static void
fill(long[] a, int fromIndex, int toIndex, long val)
Assigns the specified long value to each element of the specified range of the specified array of longs.static void
fill(long[] a, long val)
Assigns the specified long value to each element of the specified array of longs.static void
fill(short[] a, int fromIndex, int toIndex, short val)
Assigns the specified short value to each element of the specified range of the specified array of shorts.static void
fill(short[] a, short val)
Assigns the specified short value to each element of the specified array of shorts.static void
fill(Object[] a, int fromIndex, int toIndex, Object val)
Assigns the specified Object reference to each element of the specified range of the specified array of Objects.static void
fill(Object[] a, Object val)
Assigns the specified Object reference to each element of the specified array of Objects.static int
hashCode(boolean[] a)
Returns a hash code based on the contents of the specified array.static int
hashCode(byte[] a)
Returns a hash code based on the contents of the specified array.static int
hashCode(char[] a)
Returns a hash code based on the contents of the specified array.static int
hashCode(double[] a)
Returns a hash code based on the contents of the specified array.static int
hashCode(float[] a)
Returns a hash code based on the contents of the specified array.static int
hashCode(int[] a)
Returns a hash code based on the contents of the specified array.static int
hashCode(long[] a)
Returns a hash code based on the contents of the specified array.static int
hashCode(short[] a)
Returns a hash code based on the contents of the specified array.static int
hashCode(Object[] a)
Returns a hash code based on the contents of the specified array.static int
mismatch(boolean[] a, boolean[] b)
Finds and returns the index of the first mismatch between twoboolean
arrays, otherwise return 1 if no mismatch is found.static int
mismatch(boolean[] a, int aFromIndex, int aToIndex, boolean[] b, int bFromIndex, int bToIndex)
Finds and returns the relative index of the first mismatch between twoboolean
arrays over the specified ranges, otherwise return 1 if no mismatch is found.static int
mismatch(byte[] a, byte[] b)
Finds and returns the index of the first mismatch between twobyte
arrays, otherwise return 1 if no mismatch is found.static int
mismatch(byte[] a, int aFromIndex, int aToIndex, byte[] b, int bFromIndex, int bToIndex)
Finds and returns the relative index of the first mismatch between twobyte
arrays over the specified ranges, otherwise return 1 if no mismatch is found.static int
mismatch(char[] a, char[] b)
Finds and returns the index of the first mismatch between twochar
arrays, otherwise return 1 if no mismatch is found.static int
mismatch(char[] a, int aFromIndex, int aToIndex, char[] b, int bFromIndex, int bToIndex)
Finds and returns the relative index of the first mismatch between twochar
arrays over the specified ranges, otherwise return 1 if no mismatch is found.static int
mismatch(double[] a, double[] b)
Finds and returns the index of the first mismatch between twodouble
arrays, otherwise return 1 if no mismatch is found.static int
mismatch(double[] a, int aFromIndex, int aToIndex, double[] b, int bFromIndex, int bToIndex)
Finds and returns the relative index of the first mismatch between twodouble
arrays over the specified ranges, otherwise return 1 if no mismatch is found.static int
mismatch(float[] a, float[] b)
Finds and returns the index of the first mismatch between twofloat
arrays, otherwise return 1 if no mismatch is found.static int
mismatch(float[] a, int aFromIndex, int aToIndex, float[] b, int bFromIndex, int bToIndex)
Finds and returns the relative index of the first mismatch between twofloat
arrays over the specified ranges, otherwise return 1 if no mismatch is found.static int
mismatch(int[] a, int[] b)
Finds and returns the index of the first mismatch between twoint
arrays, otherwise return 1 if no mismatch is found.static int
mismatch(int[] a, int aFromIndex, int aToIndex, int[] b, int bFromIndex, int bToIndex)
Finds and returns the relative index of the first mismatch between twoint
arrays over the specified ranges, otherwise return 1 if no mismatch is found.static int
mismatch(long[] a, int aFromIndex, int aToIndex, long[] b, int bFromIndex, int bToIndex)
Finds and returns the relative index of the first mismatch between twolong
arrays over the specified ranges, otherwise return 1 if no mismatch is found.static int
mismatch(long[] a, long[] b)
Finds and returns the index of the first mismatch between twolong
arrays, otherwise return 1 if no mismatch is found.static int
mismatch(short[] a, int aFromIndex, int aToIndex, short[] b, int bFromIndex, int bToIndex)
Finds and returns the relative index of the first mismatch between twoshort
arrays over the specified ranges, otherwise return 1 if no mismatch is found.static int
mismatch(short[] a, short[] b)
Finds and returns the index of the first mismatch between twoshort
arrays, otherwise return 1 if no mismatch is found.static int
mismatch(Object[] a, int aFromIndex, int aToIndex, Object[] b, int bFromIndex, int bToIndex)
Finds and returns the relative index of the first mismatch between twoObject
arrays over the specified ranges, otherwise return 1 if no mismatch is found.static int
mismatch(Object[] a, Object[] b)
Finds and returns the index of the first mismatch between twoObject
arrays, otherwise return 1 if no mismatch is found.static <T> int
mismatch(T[] a, int aFromIndex, int aToIndex, T[] b, int bFromIndex, int bToIndex, Comparator<? super T> cmp)
Finds and returns the relative index of the first mismatch between twoObject
arrays over the specified ranges, otherwise return 1 if no mismatch is found.static <T> int
mismatch(T[] a, T[] b, Comparator<? super T> cmp)
Finds and returns the index of the first mismatch between twoObject
arrays, otherwise return 1 if no mismatch is found.static void
parallelPrefix(double[] array, int fromIndex, int toIndex, DoubleBinaryOperator op)
PerformsparallelPrefix(double[], DoubleBinaryOperator)
for the given subrange of the array.static void
parallelPrefix(double[] array, DoubleBinaryOperator op)
Cumulates, in parallel, each element of the given array in place, using the supplied function.static void
parallelPrefix(int[] array, int fromIndex, int toIndex, IntBinaryOperator op)
PerformsparallelPrefix(int[], IntBinaryOperator)
for the given subrange of the array.static void
parallelPrefix(int[] array, IntBinaryOperator op)
Cumulates, in parallel, each element of the given array in place, using the supplied function.static void
parallelPrefix(long[] array, int fromIndex, int toIndex, LongBinaryOperator op)
PerformsparallelPrefix(long[], LongBinaryOperator)
for the given subrange of the array.static void
parallelPrefix(long[] array, LongBinaryOperator op)
Cumulates, in parallel, each element of the given array in place, using the supplied function.static <T> void
parallelPrefix(T[] array, int fromIndex, int toIndex, BinaryOperator<T> op)
PerformsparallelPrefix(Object[], BinaryOperator)
for the given subrange of the array.static <T> void
parallelPrefix(T[] array, BinaryOperator<T> op)
Cumulates, in parallel, each element of the given array in place, using the supplied function.static void
parallelSetAll(double[] array, IntToDoubleFunction generator)
Set all elements of the specified array, in parallel, using the provided generator function to compute each element.static void
parallelSetAll(int[] array, IntUnaryOperator generator)
Set all elements of the specified array, in parallel, using the provided generator function to compute each element.static void
parallelSetAll(long[] array, IntToLongFunction generator)
Set all elements of the specified array, in parallel, using the provided generator function to compute each element.static <T> void
parallelSetAll(T[] array, IntFunction<? extends T> generator)
Set all elements of the specified array, in parallel, using the provided generator function to compute each element.static void
parallelSort(byte[] a)
Sorts the specified array into ascending numerical order.static void
parallelSort(byte[] a, int fromIndex, int toIndex)
Sorts the specified range of the array into ascending numerical order.static void
parallelSort(char[] a)
Sorts the specified array into ascending numerical order.static void
parallelSort(char[] a, int fromIndex, int toIndex)
Sorts the specified range of the array into ascending numerical order.static void
parallelSort(double[] a)
Sorts the specified array into ascending numerical order.static void
parallelSort(double[] a, int fromIndex, int toIndex)
Sorts the specified range of the array into ascending numerical order.static void
parallelSort(float[] a)
Sorts the specified array into ascending numerical order.static void
parallelSort(float[] a, int fromIndex, int toIndex)
Sorts the specified range of the array into ascending numerical order.static void
parallelSort(int[] a)
Sorts the specified array into ascending numerical order.static void
parallelSort(int[] a, int fromIndex, int toIndex)
Sorts the specified range of the array into ascending numerical order.static void
parallelSort(long[] a)
Sorts the specified array into ascending numerical order.static void
parallelSort(long[] a, int fromIndex, int toIndex)
Sorts the specified range of the array into ascending numerical order.static void
parallelSort(short[] a)
Sorts the specified array into ascending numerical order.static void
parallelSort(short[] a, int fromIndex, int toIndex)
Sorts the specified range of the array into ascending numerical order.static <T extends Comparable<? super T>>
voidparallelSort(T[] a)
Sorts the specified array of objects into ascending order, according to the natural ordering of its elements.static <T extends Comparable<? super T>>
voidparallelSort(T[] a, int fromIndex, int toIndex)
Sorts the specified range of the specified array of objects into ascending order, according to the natural ordering of its elements.static <T> void
parallelSort(T[] a, int fromIndex, int toIndex, Comparator<? super T> cmp)
Sorts the specified range of the specified array of objects according to the order induced by the specified comparator.static <T> void
parallelSort(T[] a, Comparator<? super T> cmp)
Sorts the specified array of objects according to the order induced by the specified comparator.static void
setAll(double[] array, IntToDoubleFunction generator)
Set all elements of the specified array, using the provided generator function to compute each element.static void
setAll(int[] array, IntUnaryOperator generator)
Set all elements of the specified array, using the provided generator function to compute each element.static void
setAll(long[] array, IntToLongFunction generator)
Set all elements of the specified array, using the provided generator function to compute each element.static <T> void
setAll(T[] array, IntFunction<? extends T> generator)
Set all elements of the specified array, using the provided generator function to compute each element.static void
sort(byte[] a)
Sorts the specified array into ascending numerical order.static void
sort(byte[] a, int fromIndex, int toIndex)
Sorts the specified range of the array into ascending order.static void
sort(char[] a)
Sorts the specified array into ascending numerical order.static void
sort(char[] a, int fromIndex, int toIndex)
Sorts the specified range of the array into ascending order.static void
sort(double[] a)
Sorts the specified array into ascending numerical order.static void
sort(double[] a, int fromIndex, int toIndex)
Sorts the specified range of the array into ascending order.static void
sort(float[] a)
Sorts the specified array into ascending numerical order.static void
sort(float[] a, int fromIndex, int toIndex)
Sorts the specified range of the array into ascending order.static void
sort(int[] a)
Sorts the specified array into ascending numerical order.static void
sort(int[] a, int fromIndex, int toIndex)
Sorts the specified range of the array into ascending order.static void
sort(long[] a)
Sorts the specified array into ascending numerical order.static void
sort(long[] a, int fromIndex, int toIndex)
Sorts the specified range of the array into ascending order.static void
sort(short[] a)
Sorts the specified array into ascending numerical order.static void
sort(short[] a, int fromIndex, int toIndex)
Sorts the specified range of the array into ascending order.static void
sort(Object[] a)
Sorts the specified array of objects into ascending order, according to the natural ordering of its elements.static void
sort(Object[] a, int fromIndex, int toIndex)
Sorts the specified range of the specified array of objects into ascending order, according to the natural ordering of its elements.static <T> void
sort(T[] a, int fromIndex, int toIndex, Comparator<? super T> c)
Sorts the specified range of the specified array of objects according to the order induced by the specified comparator.static <T> void
sort(T[] a, Comparator<? super T> c)
Sorts the specified array of objects according to the order induced by the specified comparator.static Spliterator.OfDouble
spliterator(double[] array)
Returns aSpliterator.OfDouble
covering all of the specified array.static Spliterator.OfDouble
spliterator(double[] array, int startInclusive, int endExclusive)
Returns aSpliterator.OfDouble
covering the specified range of the specified array.static Spliterator.OfInt
spliterator(int[] array)
Returns aSpliterator.OfInt
covering all of the specified array.static Spliterator.OfInt
spliterator(int[] array, int startInclusive, int endExclusive)
Returns aSpliterator.OfInt
covering the specified range of the specified array.static Spliterator.OfLong
spliterator(long[] array)
Returns aSpliterator.OfLong
covering all of the specified array.static Spliterator.OfLong
spliterator(long[] array, int startInclusive, int endExclusive)
Returns aSpliterator.OfLong
covering the specified range of the specified array.static <T> Spliterator<T>
spliterator(T[] array)
Returns aSpliterator
covering all of the specified array.static <T> Spliterator<T>
spliterator(T[] array, int startInclusive, int endExclusive)
Returns aSpliterator
covering the specified range of the specified array.static DoubleStream
stream(double[] array)
Returns a sequentialDoubleStream
with the specified array as its source.static DoubleStream
stream(double[] array, int startInclusive, int endExclusive)
Returns a sequentialDoubleStream
with the specified range of the specified array as its source.static IntStream
stream(int[] array)
Returns a sequentialIntStream
with the specified array as its source.static IntStream
stream(int[] array, int startInclusive, int endExclusive)
Returns a sequentialIntStream
with the specified range of the specified array as its source.static LongStream
stream(long[] array)
Returns a sequentialLongStream
with the specified array as its source.static LongStream
stream(long[] array, int startInclusive, int endExclusive)
Returns a sequentialLongStream
with the specified range of the specified array as its source.static <T> Stream<T>
stream(T[] array)
Returns a sequentialStream
with the specified array as its source.static <T> Stream<T>
stream(T[] array, int startInclusive, int endExclusive)
Returns a sequentialStream
with the specified range of the specified array as its source.static String
toString(boolean[] a)
Returns a string representation of the contents of the specified array.static String
toString(byte[] a)
Returns a string representation of the contents of the specified array.static String
toString(char[] a)
Returns a string representation of the contents of the specified array.static String
toString(double[] a)
Returns a string representation of the contents of the specified array.static String
toString(float[] a)
Returns a string representation of the contents of the specified array.static String
toString(int[] a)
Returns a string representation of the contents of the specified array.static String
toString(long[] a)
Returns a string representation of the contents of the specified array.static String
toString(short[] a)
Returns a string representation of the contents of the specified array.static String
toString(Object[] a)
Returns a string representation of the contents of the specified array.



Method Detail

sort
public static void sort(int[] a)
Sorts the specified array into ascending numerical order.Implementation note: The sorting algorithm is a DualPivot Quicksort by Vladimir Yaroslavskiy, Jon Bentley, and Joshua Bloch. This algorithm offers O(n log(n)) performance on many data sets that cause other quicksorts to degrade to quadratic performance, and is typically faster than traditional (onepivot) Quicksort implementations.
 Parameters:
a
 the array to be sorted

sort
public static void sort(int[] a, int fromIndex, int toIndex)
Sorts the specified range of the array into ascending order. The range to be sorted extends from the indexfromIndex
, inclusive, to the indextoIndex
, exclusive. IffromIndex == toIndex
, the range to be sorted is empty.Implementation note: The sorting algorithm is a DualPivot Quicksort by Vladimir Yaroslavskiy, Jon Bentley, and Joshua Bloch. This algorithm offers O(n log(n)) performance on many data sets that cause other quicksorts to degrade to quadratic performance, and is typically faster than traditional (onepivot) Quicksort implementations.
 Parameters:
a
 the array to be sortedfromIndex
 the index of the first element, inclusive, to be sortedtoIndex
 the index of the last element, exclusive, to be sorted Throws:
IllegalArgumentException
 iffromIndex > toIndex
ArrayIndexOutOfBoundsException
 iffromIndex < 0
ortoIndex > a.length

sort
public static void sort(long[] a)
Sorts the specified array into ascending numerical order.Implementation note: The sorting algorithm is a DualPivot Quicksort by Vladimir Yaroslavskiy, Jon Bentley, and Joshua Bloch. This algorithm offers O(n log(n)) performance on many data sets that cause other quicksorts to degrade to quadratic performance, and is typically faster than traditional (onepivot) Quicksort implementations.
 Parameters:
a
 the array to be sorted

sort
public static void sort(long[] a, int fromIndex, int toIndex)
Sorts the specified range of the array into ascending order. The range to be sorted extends from the indexfromIndex
, inclusive, to the indextoIndex
, exclusive. IffromIndex == toIndex
, the range to be sorted is empty.Implementation note: The sorting algorithm is a DualPivot Quicksort by Vladimir Yaroslavskiy, Jon Bentley, and Joshua Bloch. This algorithm offers O(n log(n)) performance on many data sets that cause other quicksorts to degrade to quadratic performance, and is typically faster than traditional (onepivot) Quicksort implementations.
 Parameters:
a
 the array to be sortedfromIndex
 the index of the first element, inclusive, to be sortedtoIndex
 the index of the last element, exclusive, to be sorted Throws:
IllegalArgumentException
 iffromIndex > toIndex
ArrayIndexOutOfBoundsException
 iffromIndex < 0
ortoIndex > a.length

sort
public static void sort(short[] a)
Sorts the specified array into ascending numerical order.Implementation note: The sorting algorithm is a DualPivot Quicksort by Vladimir Yaroslavskiy, Jon Bentley, and Joshua Bloch. This algorithm offers O(n log(n)) performance on many data sets that cause other quicksorts to degrade to quadratic performance, and is typically faster than traditional (onepivot) Quicksort implementations.
 Parameters:
a
 the array to be sorted

sort
public static void sort(short[] a, int fromIndex, int toIndex)
Sorts the specified range of the array into ascending order. The range to be sorted extends from the indexfromIndex
, inclusive, to the indextoIndex
, exclusive. IffromIndex == toIndex
, the range to be sorted is empty.Implementation note: The sorting algorithm is a DualPivot Quicksort by Vladimir Yaroslavskiy, Jon Bentley, and Joshua Bloch. This algorithm offers O(n log(n)) performance on many data sets that cause other quicksorts to degrade to quadratic performance, and is typically faster than traditional (onepivot) Quicksort implementations.
 Parameters:
a
 the array to be sortedfromIndex
 the index of the first element, inclusive, to be sortedtoIndex
 the index of the last element, exclusive, to be sorted Throws:
IllegalArgumentException
 iffromIndex > toIndex
ArrayIndexOutOfBoundsException
 iffromIndex < 0
ortoIndex > a.length

sort
public static void sort(char[] a)
Sorts the specified array into ascending numerical order.Implementation note: The sorting algorithm is a DualPivot Quicksort by Vladimir Yaroslavskiy, Jon Bentley, and Joshua Bloch. This algorithm offers O(n log(n)) performance on many data sets that cause other quicksorts to degrade to quadratic performance, and is typically faster than traditional (onepivot) Quicksort implementations.
 Parameters:
a
 the array to be sorted

sort
public static void sort(char[] a, int fromIndex, int toIndex)
Sorts the specified range of the array into ascending order. The range to be sorted extends from the indexfromIndex
, inclusive, to the indextoIndex
, exclusive. IffromIndex == toIndex
, the range to be sorted is empty.Implementation note: The sorting algorithm is a DualPivot Quicksort by Vladimir Yaroslavskiy, Jon Bentley, and Joshua Bloch. This algorithm offers O(n log(n)) performance on many data sets that cause other quicksorts to degrade to quadratic performance, and is typically faster than traditional (onepivot) Quicksort implementations.
 Parameters:
a
 the array to be sortedfromIndex
 the index of the first element, inclusive, to be sortedtoIndex
 the index of the last element, exclusive, to be sorted Throws:
IllegalArgumentException
 iffromIndex > toIndex
ArrayIndexOutOfBoundsException
 iffromIndex < 0
ortoIndex > a.length

sort
public static void sort(byte[] a)
Sorts the specified array into ascending numerical order.Implementation note: The sorting algorithm is a DualPivot Quicksort by Vladimir Yaroslavskiy, Jon Bentley, and Joshua Bloch. This algorithm offers O(n log(n)) performance on many data sets that cause other quicksorts to degrade to quadratic performance, and is typically faster than traditional (onepivot) Quicksort implementations.
 Parameters:
a
 the array to be sorted

sort
public static void sort(byte[] a, int fromIndex, int toIndex)
Sorts the specified range of the array into ascending order. The range to be sorted extends from the indexfromIndex
, inclusive, to the indextoIndex
, exclusive. IffromIndex == toIndex
, the range to be sorted is empty.Implementation note: The sorting algorithm is a DualPivot Quicksort by Vladimir Yaroslavskiy, Jon Bentley, and Joshua Bloch. This algorithm offers O(n log(n)) performance on many data sets that cause other quicksorts to degrade to quadratic performance, and is typically faster than traditional (onepivot) Quicksort implementations.
 Parameters:
a
 the array to be sortedfromIndex
 the index of the first element, inclusive, to be sortedtoIndex
 the index of the last element, exclusive, to be sorted Throws:
IllegalArgumentException
 iffromIndex > toIndex
ArrayIndexOutOfBoundsException
 iffromIndex < 0
ortoIndex > a.length

sort
public static void sort(float[] a)
Sorts the specified array into ascending numerical order.The
<
relation does not provide a total order on all float values:0.0f == 0.0f
istrue
and aFloat.NaN
value compares neither less than, greater than, nor equal to any value, even itself. This method uses the total order imposed by the methodFloat.compareTo(java.lang.Float)
:0.0f
is treated as less than value0.0f
andFloat.NaN
is considered greater than any other value and allFloat.NaN
values are considered equal.Implementation note: The sorting algorithm is a DualPivot Quicksort by Vladimir Yaroslavskiy, Jon Bentley, and Joshua Bloch. This algorithm offers O(n log(n)) performance on many data sets that cause other quicksorts to degrade to quadratic performance, and is typically faster than traditional (onepivot) Quicksort implementations.
 Parameters:
a
 the array to be sorted

sort
public static void sort(float[] a, int fromIndex, int toIndex)
Sorts the specified range of the array into ascending order. The range to be sorted extends from the indexfromIndex
, inclusive, to the indextoIndex
, exclusive. IffromIndex == toIndex
, the range to be sorted is empty.The
<
relation does not provide a total order on all float values:0.0f == 0.0f
istrue
and aFloat.NaN
value compares neither less than, greater than, nor equal to any value, even itself. This method uses the total order imposed by the methodFloat.compareTo(java.lang.Float)
:0.0f
is treated as less than value0.0f
andFloat.NaN
is considered greater than any other value and allFloat.NaN
values are considered equal.Implementation note: The sorting algorithm is a DualPivot Quicksort by Vladimir Yaroslavskiy, Jon Bentley, and Joshua Bloch. This algorithm offers O(n log(n)) performance on many data sets that cause other quicksorts to degrade to quadratic performance, and is typically faster than traditional (onepivot) Quicksort implementations.
 Parameters:
a
 the array to be sortedfromIndex
 the index of the first element, inclusive, to be sortedtoIndex
 the index of the last element, exclusive, to be sorted Throws:
IllegalArgumentException
 iffromIndex > toIndex
ArrayIndexOutOfBoundsException
 iffromIndex < 0
ortoIndex > a.length

sort
public static void sort(double[] a)
Sorts the specified array into ascending numerical order.The
<
relation does not provide a total order on all double values:0.0d == 0.0d
istrue
and aDouble.NaN
value compares neither less than, greater than, nor equal to any value, even itself. This method uses the total order imposed by the methodDouble.compareTo(java.lang.Double)
:0.0d
is treated as less than value0.0d
andDouble.NaN
is considered greater than any other value and allDouble.NaN
values are considered equal.Implementation note: The sorting algorithm is a DualPivot Quicksort by Vladimir Yaroslavskiy, Jon Bentley, and Joshua Bloch. This algorithm offers O(n log(n)) performance on many data sets that cause other quicksorts to degrade to quadratic performance, and is typically faster than traditional (onepivot) Quicksort implementations.
 Parameters:
a
 the array to be sorted

sort
public static void sort(double[] a, int fromIndex, int toIndex)
Sorts the specified range of the array into ascending order. The range to be sorted extends from the indexfromIndex
, inclusive, to the indextoIndex
, exclusive. IffromIndex == toIndex
, the range to be sorted is empty.The
<
relation does not provide a total order on all double values:0.0d == 0.0d
istrue
and aDouble.NaN
value compares neither less than, greater than, nor equal to any value, even itself. This method uses the total order imposed by the methodDouble.compareTo(java.lang.Double)
:0.0d
is treated as less than value0.0d
andDouble.NaN
is considered greater than any other value and allDouble.NaN
values are considered equal.Implementation note: The sorting algorithm is a DualPivot Quicksort by Vladimir Yaroslavskiy, Jon Bentley, and Joshua Bloch. This algorithm offers O(n log(n)) performance on many data sets that cause other quicksorts to degrade to quadratic performance, and is typically faster than traditional (onepivot) Quicksort implementations.
 Parameters:
a
 the array to be sortedfromIndex
 the index of the first element, inclusive, to be sortedtoIndex
 the index of the last element, exclusive, to be sorted Throws:
IllegalArgumentException
 iffromIndex > toIndex
ArrayIndexOutOfBoundsException
 iffromIndex < 0
ortoIndex > a.length

parallelSort
public static void parallelSort(byte[] a)
Sorts the specified array into ascending numerical order. Implementation Note:
 The sorting algorithm is a parallel sortmerge that breaks the
array into subarrays that are themselves sorted and then merged. When
the subarray length reaches a minimum granularity, the subarray is
sorted using the appropriate
Arrays.sort
method. If the length of the specified array is less than the minimum granularity, then it is sorted using the appropriateArrays.sort
method. The algorithm requires a working space no greater than the size of the original array. TheForkJoin common pool
is used to execute any parallel tasks.  Parameters:
a
 the array to be sorted Since:
 1.8

parallelSort
public static void parallelSort(byte[] a, int fromIndex, int toIndex)
Sorts the specified range of the array into ascending numerical order. The range to be sorted extends from the indexfromIndex
, inclusive, to the indextoIndex
, exclusive. IffromIndex == toIndex
, the range to be sorted is empty. Implementation Note:
 The sorting algorithm is a parallel sortmerge that breaks the
array into subarrays that are themselves sorted and then merged. When
the subarray length reaches a minimum granularity, the subarray is
sorted using the appropriate
Arrays.sort
method. If the length of the specified array is less than the minimum granularity, then it is sorted using the appropriateArrays.sort
method. The algorithm requires a working space no greater than the size of the specified range of the original array. TheForkJoin common pool
is used to execute any parallel tasks.  Parameters:
a
 the array to be sortedfromIndex
 the index of the first element, inclusive, to be sortedtoIndex
 the index of the last element, exclusive, to be sorted Throws:
IllegalArgumentException
 iffromIndex > toIndex
ArrayIndexOutOfBoundsException
 iffromIndex < 0
ortoIndex > a.length
 Since:
 1.8

parallelSort
public static void parallelSort(char[] a)
Sorts the specified array into ascending numerical order. Implementation Note:
 The sorting algorithm is a parallel sortmerge that breaks the
array into subarrays that are themselves sorted and then merged. When
the subarray length reaches a minimum granularity, the subarray is
sorted using the appropriate
Arrays.sort
method. If the length of the specified array is less than the minimum granularity, then it is sorted using the appropriateArrays.sort
method. The algorithm requires a working space no greater than the size of the original array. TheForkJoin common pool
is used to execute any parallel tasks.  Parameters:
a
 the array to be sorted Since:
 1.8

parallelSort
public static void parallelSort(char[] a, int fromIndex, int toIndex)
Sorts the specified range of the array into ascending numerical order. The range to be sorted extends from the indexfromIndex
, inclusive, to the indextoIndex
, exclusive. IffromIndex == toIndex
, the range to be sorted is empty. Implementation Note:
 The sorting algorithm is a parallel sortmerge that breaks the
array into subarrays that are themselves sorted and then merged. When
the subarray length reaches a minimum granularity, the subarray is
sorted using the appropriate
Arrays.sort
method. If the length of the specified array is less than the minimum granularity, then it is sorted using the appropriateArrays.sort
method. The algorithm requires a working space no greater than the size of the specified range of the original array. TheForkJoin common pool
is used to execute any parallel tasks.  Parameters:
a
 the array to be sortedfromIndex
 the index of the first element, inclusive, to be sortedtoIndex
 the index of the last element, exclusive, to be sorted Throws:
IllegalArgumentException
 iffromIndex > toIndex
ArrayIndexOutOfBoundsException
 iffromIndex < 0
ortoIndex > a.length
 Since:
 1.8

parallelSort
public static void parallelSort(short[] a)
Sorts the specified array into ascending numerical order. Implementation Note:
 The sorting algorithm is a parallel sortmerge that breaks the
array into subarrays that are themselves sorted and then merged. When
the subarray length reaches a minimum granularity, the subarray is
sorted using the appropriate
Arrays.sort
method. If the length of the specified array is less than the minimum granularity, then it is sorted using the appropriateArrays.sort
method. The algorithm requires a working space no greater than the size of the original array. TheForkJoin common pool
is used to execute any parallel tasks.  Parameters:
a
 the array to be sorted Since:
 1.8

parallelSort
public static void parallelSort(short[] a, int fromIndex, int toIndex)
Sorts the specified range of the array into ascending numerical order. The range to be sorted extends from the indexfromIndex
, inclusive, to the indextoIndex
, exclusive. IffromIndex == toIndex
, the range to be sorted is empty. Implementation Note:
 The sorting algorithm is a parallel sortmerge that breaks the
array into subarrays that are themselves sorted and then merged. When
the subarray length reaches a minimum granularity, the subarray is
sorted using the appropriate
Arrays.sort
method. If the length of the specified array is less than the minimum granularity, then it is sorted using the appropriateArrays.sort
method. The algorithm requires a working space no greater than the size of the specified range of the original array. TheForkJoin common pool
is used to execute any parallel tasks.  Parameters:
a
 the array to be sortedfromIndex
 the index of the first element, inclusive, to be sortedtoIndex
 the index of the last element, exclusive, to be sorted Throws:
IllegalArgumentException
 iffromIndex > toIndex
ArrayIndexOutOfBoundsException
 iffromIndex < 0
ortoIndex > a.length
 Since:
 1.8

parallelSort
public static void parallelSort(int[] a)
Sorts the specified array into ascending numerical order. Implementation Note:
 The sorting algorithm is a parallel sortmerge that breaks the
array into subarrays that are themselves sorted and then merged. When
the subarray length reaches a minimum granularity, the subarray is
sorted using the appropriate
Arrays.sort
method. If the length of the specified array is less than the minimum granularity, then it is sorted using the appropriateArrays.sort
method. The algorithm requires a working space no greater than the size of the original array. TheForkJoin common pool
is used to execute any parallel tasks.  Parameters:
a
 the array to be sorted Since:
 1.8

parallelSort
public static void parallelSort(int[] a, int fromIndex, int toIndex)
Sorts the specified range of the array into ascending numerical order. The range to be sorted extends from the indexfromIndex
, inclusive, to the indextoIndex
, exclusive. IffromIndex == toIndex
, the range to be sorted is empty. Implementation Note:
 The sorting algorithm is a parallel sortmerge that breaks the
array into subarrays that are themselves sorted and then merged. When
the subarray length reaches a minimum granularity, the subarray is
sorted using the appropriate
Arrays.sort
method. If the length of the specified array is less than the minimum granularity, then it is sorted using the appropriateArrays.sort
method. The algorithm requires a working space no greater than the size of the specified range of the original array. TheForkJoin common pool
is used to execute any parallel tasks.  Parameters:
a
 the array to be sortedfromIndex
 the index of the first element, inclusive, to be sortedtoIndex
 the index of the last element, exclusive, to be sorted Throws:
IllegalArgumentException
 iffromIndex > toIndex
ArrayIndexOutOfBoundsException
 iffromIndex < 0
ortoIndex > a.length
 Since:
 1.8

parallelSort
public static void parallelSort(long[] a)
Sorts the specified array into ascending numerical order. Implementation Note:
 The sorting algorithm is a parallel sortmerge that breaks the
array into subarrays that are themselves sorted and then merged. When
the subarray length reaches a minimum granularity, the subarray is
sorted using the appropriate
Arrays.sort
method. If the length of the specified array is less than the minimum granularity, then it is sorted using the appropriateArrays.sort
method. The algorithm requires a working space no greater than the size of the original array. TheForkJoin common pool
is used to execute any parallel tasks.  Parameters:
a
 the array to be sorted Since:
 1.8

parallelSort
public static void parallelSort(long[] a, int fromIndex, int toIndex)
Sorts the specified range of the array into ascending numerical order. The range to be sorted extends from the indexfromIndex
, inclusive, to the indextoIndex
, exclusive. IffromIndex == toIndex
, the range to be sorted is empty. Implementation Note:
 The sorting algorithm is a parallel sortmerge that breaks the
array into subarrays that are themselves sorted and then merged. When
the subarray length reaches a minimum granularity, the subarray is
sorted using the appropriate
Arrays.sort
method. If the length of the specified array is less than the minimum granularity, then it is sorted using the appropriateArrays.sort
method. The algorithm requires a working space no greater than the size of the specified range of the original array. TheForkJoin common pool
is used to execute any parallel tasks.  Parameters:
a
 the array to be sortedfromIndex
 the index of the first element, inclusive, to be sortedtoIndex
 the index of the last element, exclusive, to be sorted Throws:
IllegalArgumentException
 iffromIndex > toIndex
ArrayIndexOutOfBoundsException
 iffromIndex < 0
ortoIndex > a.length
 Since:
 1.8

parallelSort
public static void parallelSort(float[] a)
Sorts the specified array into ascending numerical order.The
<
relation does not provide a total order on all float values:0.0f == 0.0f
istrue
and aFloat.NaN
value compares neither less than, greater than, nor equal to any value, even itself. This method uses the total order imposed by the methodFloat.compareTo(java.lang.Float)
:0.0f
is treated as less than value0.0f
andFloat.NaN
is considered greater than any other value and allFloat.NaN
values are considered equal. Implementation Note:
 The sorting algorithm is a parallel sortmerge that breaks the
array into subarrays that are themselves sorted and then merged. When
the subarray length reaches a minimum granularity, the subarray is
sorted using the appropriate
Arrays.sort
method. If the length of the specified array is less than the minimum granularity, then it is sorted using the appropriateArrays.sort
method. The algorithm requires a working space no greater than the size of the original array. TheForkJoin common pool
is used to execute any parallel tasks.  Parameters:
a
 the array to be sorted Since:
 1.8

parallelSort
public static void parallelSort(float[] a, int fromIndex, int toIndex)
Sorts the specified range of the array into ascending numerical order. The range to be sorted extends from the indexfromIndex
, inclusive, to the indextoIndex
, exclusive. IffromIndex == toIndex
, the range to be sorted is empty.The
<
relation does not provide a total order on all float values:0.0f == 0.0f
istrue
and aFloat.NaN
value compares neither less than, greater than, nor equal to any value, even itself. This method uses the total order imposed by the methodFloat.compareTo(java.lang.Float)
:0.0f
is treated as less than value0.0f
andFloat.NaN
is considered greater than any other value and allFloat.NaN
values are considered equal. Implementation Note:
 The sorting algorithm is a parallel sortmerge that breaks the
array into subarrays that are themselves sorted and then merged. When
the subarray length reaches a minimum granularity, the subarray is
sorted using the appropriate
Arrays.sort
method. If the length of the specified array is less than the minimum granularity, then it is sorted using the appropriateArrays.sort
method. The algorithm requires a working space no greater than the size of the specified range of the original array. TheForkJoin common pool
is used to execute any parallel tasks.  Parameters:
a
 the array to be sortedfromIndex
 the index of the first element, inclusive, to be sortedtoIndex
 the index of the last element, exclusive, to be sorted Throws:
IllegalArgumentException
 iffromIndex > toIndex
ArrayIndexOutOfBoundsException
 iffromIndex < 0
ortoIndex > a.length
 Since:
 1.8

parallelSort
public static void parallelSort(double[] a)
Sorts the specified array into ascending numerical order.The
<
relation does not provide a total order on all double values:0.0d == 0.0d
istrue
and aDouble.NaN
value compares neither less than, greater than, nor equal to any value, even itself. This method uses the total order imposed by the methodDouble.compareTo(java.lang.Double)
:0.0d
is treated as less than value0.0d
andDouble.NaN
is considered greater than any other value and allDouble.NaN
values are considered equal. Implementation Note:
 The sorting algorithm is a parallel sortmerge that breaks the
array into subarrays that are themselves sorted and then merged. When
the subarray length reaches a minimum granularity, the subarray is
sorted using the appropriate
Arrays.sort
method. If the length of the specified array is less than the minimum granularity, then it is sorted using the appropriateArrays.sort
method. The algorithm requires a working space no greater than the size of the original array. TheForkJoin common pool
is used to execute any parallel tasks.  Parameters:
a
 the array to be sorted Since:
 1.8

parallelSort
public static void parallelSort(double[] a, int fromIndex, int toIndex)
Sorts the specified range of the array into ascending numerical order. The range to be sorted extends from the indexfromIndex
, inclusive, to the indextoIndex
, exclusive. IffromIndex == toIndex
, the range to be sorted is empty.The
<
relation does not provide a total order on all double values:0.0d == 0.0d
istrue
and aDouble.NaN
value compares neither less than, greater than, nor equal to any value, even itself. This method uses the total order imposed by the methodDouble.compareTo(java.lang.Double)
:0.0d
is treated as less than value0.0d
andDouble.NaN
is considered greater than any other value and allDouble.NaN
values are considered equal. Implementation Note:
 The sorting algorithm is a parallel sortmerge that breaks the
array into subarrays that are themselves sorted and then merged. When
the subarray length reaches a minimum granularity, the subarray is
sorted using the appropriate
Arrays.sort
method. If the length of the specified array is less than the minimum granularity, then it is sorted using the appropriateArrays.sort
method. The algorithm requires a working space no greater than the size of the specified range of the original array. TheForkJoin common pool
is used to execute any parallel tasks.  Parameters:
a
 the array to be sortedfromIndex
 the index of the first element, inclusive, to be sortedtoIndex
 the index of the last element, exclusive, to be sorted Throws:
IllegalArgumentException
 iffromIndex > toIndex
ArrayIndexOutOfBoundsException
 iffromIndex < 0
ortoIndex > a.length
 Since:
 1.8

parallelSort
public static <T extends Comparable<? super T>> void parallelSort(T[] a)
Sorts the specified array of objects into ascending order, according to the natural ordering of its elements. All elements in the array must implement theComparable
interface. Furthermore, all elements in the array must be mutually comparable (that is,e1.compareTo(e2)
must not throw aClassCastException
for any elementse1
ande2
in the array).This sort is guaranteed to be stable: equal elements will not be reordered as a result of the sort.
 Implementation Note:
 The sorting algorithm is a parallel sortmerge that breaks the
array into subarrays that are themselves sorted and then merged. When
the subarray length reaches a minimum granularity, the subarray is
sorted using the appropriate
Arrays.sort
method. If the length of the specified array is less than the minimum granularity, then it is sorted using the appropriateArrays.sort
method. The algorithm requires a working space no greater than the size of the original array. TheForkJoin common pool
is used to execute any parallel tasks.  Type Parameters:
T
 the class of the objects to be sorted Parameters:
a
 the array to be sorted Throws:
ClassCastException
 if the array contains elements that are not mutually comparable (for example, strings and integers)IllegalArgumentException
 (optional) if the natural ordering of the array elements is found to violate theComparable
contract Since:
 1.8

parallelSort
public static <T extends Comparable<? super T>> void parallelSort(T[] a, int fromIndex, int toIndex)
Sorts the specified range of the specified array of objects into ascending order, according to the natural ordering of its elements. The range to be sorted extends from indexfromIndex
, inclusive, to indextoIndex
, exclusive. (IffromIndex==toIndex
, the range to be sorted is empty.) All elements in this range must implement theComparable
interface. Furthermore, all elements in this range must be mutually comparable (that is,e1.compareTo(e2)
must not throw aClassCastException
for any elementse1
ande2
in the array).This sort is guaranteed to be stable: equal elements will not be reordered as a result of the sort.
 Implementation Note:
 The sorting algorithm is a parallel sortmerge that breaks the
array into subarrays that are themselves sorted and then merged. When
the subarray length reaches a minimum granularity, the subarray is
sorted using the appropriate
Arrays.sort
method. If the length of the specified array is less than the minimum granularity, then it is sorted using the appropriateArrays.sort
method. The algorithm requires a working space no greater than the size of the specified range of the original array. TheForkJoin common pool
is used to execute any parallel tasks.  Type Parameters:
T
 the class of the objects to be sorted Parameters:
a
 the array to be sortedfromIndex
 the index of the first element (inclusive) to be sortedtoIndex
 the index of the last element (exclusive) to be sorted Throws:
IllegalArgumentException
 iffromIndex > toIndex
or (optional) if the natural ordering of the array elements is found to violate theComparable
contractArrayIndexOutOfBoundsException
 iffromIndex < 0
ortoIndex > a.length
ClassCastException
 if the array contains elements that are not mutually comparable (for example, strings and integers). Since:
 1.8

parallelSort
public static <T> void parallelSort(T[] a, Comparator<? super T> cmp)
Sorts the specified array of objects according to the order induced by the specified comparator. All elements in the array must be mutually comparable by the specified comparator (that is,c.compare(e1, e2)
must not throw aClassCastException
for any elementse1
ande2
in the array).This sort is guaranteed to be stable: equal elements will not be reordered as a result of the sort.
 Implementation Note:
 The sorting algorithm is a parallel sortmerge that breaks the
array into subarrays that are themselves sorted and then merged. When
the subarray length reaches a minimum granularity, the subarray is
sorted using the appropriate
Arrays.sort
method. If the length of the specified array is less than the minimum granularity, then it is sorted using the appropriateArrays.sort
method. The algorithm requires a working space no greater than the size of the original array. TheForkJoin common pool
is used to execute any parallel tasks.  Type Parameters:
T
 the class of the objects to be sorted Parameters:
a
 the array to be sortedcmp
 the comparator to determine the order of the array. Anull
value indicates that the elements' natural ordering should be used. Throws:
ClassCastException
 if the array contains elements that are not mutually comparable using the specified comparatorIllegalArgumentException
 (optional) if the comparator is found to violate theComparator
contract Since:
 1.8

parallelSort
public static <T> void parallelSort(T[] a, int fromIndex, int toIndex, Comparator<? super T> cmp)
Sorts the specified range of the specified array of objects according to the order induced by the specified comparator. The range to be sorted extends from indexfromIndex
, inclusive, to indextoIndex
, exclusive. (IffromIndex==toIndex
, the range to be sorted is empty.) All elements in the range must be mutually comparable by the specified comparator (that is,c.compare(e1, e2)
must not throw aClassCastException
for any elementse1
ande2
in the range).This sort is guaranteed to be stable: equal elements will not be reordered as a result of the sort.
 Implementation Note:
 The sorting algorithm is a parallel sortmerge that breaks the
array into subarrays that are themselves sorted and then merged. When
the subarray length reaches a minimum granularity, the subarray is
sorted using the appropriate
Arrays.sort
method. If the length of the specified array is less than the minimum granularity, then it is sorted using the appropriateArrays.sort
method. The algorithm requires a working space no greater than the size of the specified range of the original array. TheForkJoin common pool
is used to execute any parallel tasks.  Type Parameters:
T
 the class of the objects to be sorted Parameters:
a
 the array to be sortedfromIndex
 the index of the first element (inclusive) to be sortedtoIndex
 the index of the last element (exclusive) to be sortedcmp
 the comparator to determine the order of the array. Anull
value indicates that the elements' natural ordering should be used. Throws:
IllegalArgumentException
 iffromIndex > toIndex
or (optional) if the natural ordering of the array elements is found to violate theComparable
contractArrayIndexOutOfBoundsException
 iffromIndex < 0
ortoIndex > a.length
ClassCastException
 if the array contains elements that are not mutually comparable (for example, strings and integers). Since:
 1.8

sort
public static void sort(Object[] a)
Sorts the specified array of objects into ascending order, according to the natural ordering of its elements. All elements in the array must implement theComparable
interface. Furthermore, all elements in the array must be mutually comparable (that is,e1.compareTo(e2)
must not throw aClassCastException
for any elementse1
ande2
in the array).This sort is guaranteed to be stable: equal elements will not be reordered as a result of the sort.
Implementation note: This implementation is a stable, adaptive, iterative mergesort that requires far fewer than n lg(n) comparisons when the input array is partially sorted, while offering the performance of a traditional mergesort when the input array is randomly ordered. If the input array is nearly sorted, the implementation requires approximately n comparisons. Temporary storage requirements vary from a small constant for nearly sorted input arrays to n/2 object references for randomly ordered input arrays.
The implementation takes equal advantage of ascending and descending order in its input array, and can take advantage of ascending and descending order in different parts of the same input array. It is wellsuited to merging two or more sorted arrays: simply concatenate the arrays and sort the resulting array.
The implementation was adapted from Tim Peters's list sort for Python ( TimSort). It uses techniques from Peter McIlroy's "Optimistic Sorting and Information Theoretic Complexity", in Proceedings of the Fourth Annual ACMSIAM Symposium on Discrete Algorithms, pp 467474, January 1993.
 Parameters:
a
 the array to be sorted Throws:
ClassCastException
 if the array contains elements that are not mutually comparable (for example, strings and integers)IllegalArgumentException
 (optional) if the natural ordering of the array elements is found to violate theComparable
contract

sort
public static void sort(Object[] a, int fromIndex, int toIndex)
Sorts the specified range of the specified array of objects into ascending order, according to the natural ordering of its elements. The range to be sorted extends from indexfromIndex
, inclusive, to indextoIndex
, exclusive. (IffromIndex==toIndex
, the range to be sorted is empty.) All elements in this range must implement theComparable
interface. Furthermore, all elements in this range must be mutually comparable (that is,e1.compareTo(e2)
must not throw aClassCastException
for any elementse1
ande2
in the array).This sort is guaranteed to be stable: equal elements will not be reordered as a result of the sort.
Implementation note: This implementation is a stable, adaptive, iterative mergesort that requires far fewer than n lg(n) comparisons when the input array is partially sorted, while offering the performance of a traditional mergesort when the input array is randomly ordered. If the input array is nearly sorted, the implementation requires approximately n comparisons. Temporary storage requirements vary from a small constant for nearly sorted input arrays to n/2 object references for randomly ordered input arrays.
The implementation takes equal advantage of ascending and descending order in its input array, and can take advantage of ascending and descending order in different parts of the same input array. It is wellsuited to merging two or more sorted arrays: simply concatenate the arrays and sort the resulting array.
The implementation was adapted from Tim Peters's list sort for Python ( TimSort). It uses techniques from Peter McIlroy's "Optimistic Sorting and Information Theoretic Complexity", in Proceedings of the Fourth Annual ACMSIAM Symposium on Discrete Algorithms, pp 467474, January 1993.
 Parameters:
a
 the array to be sortedfromIndex
 the index of the first element (inclusive) to be sortedtoIndex
 the index of the last element (exclusive) to be sorted Throws:
IllegalArgumentException
 iffromIndex > toIndex
or (optional) if the natural ordering of the array elements is found to violate theComparable
contractArrayIndexOutOfBoundsException
 iffromIndex < 0
ortoIndex > a.length
ClassCastException
 if the array contains elements that are not mutually comparable (for example, strings and integers).

sort
public static <T> void sort(T[] a, Comparator<? super T> c)
Sorts the specified array of objects according to the order induced by the specified comparator. All elements in the array must be mutually comparable by the specified comparator (that is,c.compare(e1, e2)
must not throw aClassCastException
for any elementse1
ande2
in the array).This sort is guaranteed to be stable: equal elements will not be reordered as a result of the sort.
Implementation note: This implementation is a stable, adaptive, iterative mergesort that requires far fewer than n lg(n) comparisons when the input array is partially sorted, while offering the performance of a traditional mergesort when the input array is randomly ordered. If the input array is nearly sorted, the implementation requires approximately n comparisons. Temporary storage requirements vary from a small constant for nearly sorted input arrays to n/2 object references for randomly ordered input arrays.
The implementation takes equal advantage of ascending and descending order in its input array, and can take advantage of ascending and descending order in different parts of the same input array. It is wellsuited to merging two or more sorted arrays: simply concatenate the arrays and sort the resulting array.
The implementation was adapted from Tim Peters's list sort for Python ( TimSort). It uses techniques from Peter McIlroy's "Optimistic Sorting and Information Theoretic Complexity", in Proceedings of the Fourth Annual ACMSIAM Symposium on Discrete Algorithms, pp 467474, January 1993.
 Type Parameters:
T
 the class of the objects to be sorted Parameters:
a
 the array to be sortedc
 the comparator to determine the order of the array. Anull
value indicates that the elements' natural ordering should be used. Throws:
ClassCastException
 if the array contains elements that are not mutually comparable using the specified comparatorIllegalArgumentException
 (optional) if the comparator is found to violate theComparator
contract

sort
public static <T> void sort(T[] a, int fromIndex, int toIndex, Comparator<? super T> c)
Sorts the specified range of the specified array of objects according to the order induced by the specified comparator. The range to be sorted extends from indexfromIndex
, inclusive, to indextoIndex
, exclusive. (IffromIndex==toIndex
, the range to be sorted is empty.) All elements in the range must be mutually comparable by the specified comparator (that is,c.compare(e1, e2)
must not throw aClassCastException
for any elementse1
ande2
in the range).This sort is guaranteed to be stable: equal elements will not be reordered as a result of the sort.
Implementation note: This implementation is a stable, adaptive, iterative mergesort that requires far fewer than n lg(n) comparisons when the input array is partially sorted, while offering the performance of a traditional mergesort when the input array is randomly ordered. If the input array is nearly sorted, the implementation requires approximately n comparisons. Temporary storage requirements vary from a small constant for nearly sorted input arrays to n/2 object references for randomly ordered input arrays.
The implementation takes equal advantage of ascending and descending order in its input array, and can take advantage of ascending and descending order in different parts of the same input array. It is wellsuited to merging two or more sorted arrays: simply concatenate the arrays and sort the resulting array.
The implementation was adapted from Tim Peters's list sort for Python ( TimSort). It uses techniques from Peter McIlroy's "Optimistic Sorting and Information Theoretic Complexity", in Proceedings of the Fourth Annual ACMSIAM Symposium on Discrete Algorithms, pp 467474, January 1993.
 Type Parameters:
T
 the class of the objects to be sorted Parameters:
a
 the array to be sortedfromIndex
 the index of the first element (inclusive) to be sortedtoIndex
 the index of the last element (exclusive) to be sortedc
 the comparator to determine the order of the array. Anull
value indicates that the elements' natural ordering should be used. Throws:
ClassCastException
 if the array contains elements that are not mutually comparable using the specified comparator.IllegalArgumentException
 iffromIndex > toIndex
or (optional) if the comparator is found to violate theComparator
contractArrayIndexOutOfBoundsException
 iffromIndex < 0
ortoIndex > a.length

parallelPrefix
public static <T> void parallelPrefix(T[] array, BinaryOperator<T> op)
Cumulates, in parallel, each element of the given array in place, using the supplied function. For example if the array initially holds[2, 1, 0, 3]
and the operation performs addition, then upon return the array holds[2, 3, 3, 6]
. Parallel prefix computation is usually more efficient than sequential loops for large arrays. Type Parameters:
T
 the class of the objects in the array Parameters:
array
 the array, which is modified inplace by this methodop
 a sideeffectfree, associative function to perform the cumulation Throws:
NullPointerException
 if the specified array or function is null Since:
 1.8

parallelPrefix
public static <T> void parallelPrefix(T[] array, int fromIndex, int toIndex, BinaryOperator<T> op)
PerformsparallelPrefix(Object[], BinaryOperator)
for the given subrange of the array. Type Parameters:
T
 the class of the objects in the array Parameters:
array
 the arrayfromIndex
 the index of the first element, inclusivetoIndex
 the index of the last element, exclusiveop
 a sideeffectfree, associative function to perform the cumulation Throws:
IllegalArgumentException
 iffromIndex > toIndex
ArrayIndexOutOfBoundsException
 iffromIndex < 0
ortoIndex > array.length
NullPointerException
 if the specified array or function is null Since:
 1.8

parallelPrefix
public static void parallelPrefix(long[] array, LongBinaryOperator op)
Cumulates, in parallel, each element of the given array in place, using the supplied function. For example if the array initially holds[2, 1, 0, 3]
and the operation performs addition, then upon return the array holds[2, 3, 3, 6]
. Parallel prefix computation is usually more efficient than sequential loops for large arrays. Parameters:
array
 the array, which is modified inplace by this methodop
 a sideeffectfree, associative function to perform the cumulation Throws:
NullPointerException
 if the specified array or function is null Since:
 1.8

parallelPrefix
public static void parallelPrefix(long[] array, int fromIndex, int toIndex, LongBinaryOperator op)
PerformsparallelPrefix(long[], LongBinaryOperator)
for the given subrange of the array. Parameters:
array
 the arrayfromIndex
 the index of the first element, inclusivetoIndex
 the index of the last element, exclusiveop
 a sideeffectfree, associative function to perform the cumulation Throws:
IllegalArgumentException
 iffromIndex > toIndex
ArrayIndexOutOfBoundsException
 iffromIndex < 0
ortoIndex > array.length
NullPointerException
 if the specified array or function is null Since:
 1.8

parallelPrefix
public static void parallelPrefix(double[] array, DoubleBinaryOperator op)
Cumulates, in parallel, each element of the given array in place, using the supplied function. For example if the array initially holds[2.0, 1.0, 0.0, 3.0]
and the operation performs addition, then upon return the array holds[2.0, 3.0, 3.0, 6.0]
. Parallel prefix computation is usually more efficient than sequential loops for large arrays.Because floatingpoint operations may not be strictly associative, the returned result may not be identical to the value that would be obtained if the operation was performed sequentially.
 Parameters:
array
 the array, which is modified inplace by this methodop
 a sideeffectfree function to perform the cumulation Throws:
NullPointerException
 if the specified array or function is null Since:
 1.8

parallelPrefix
public static void parallelPrefix(double[] array, int fromIndex, int toIndex, DoubleBinaryOperator op)
PerformsparallelPrefix(double[], DoubleBinaryOperator)
for the given subrange of the array. Parameters:
array
 the arrayfromIndex
 the index of the first element, inclusivetoIndex
 the index of the last element, exclusiveop
 a sideeffectfree, associative function to perform the cumulation Throws:
IllegalArgumentException
 iffromIndex > toIndex
ArrayIndexOutOfBoundsException
 iffromIndex < 0
ortoIndex > array.length
NullPointerException
 if the specified array or function is null Since:
 1.8

parallelPrefix
public static void parallelPrefix(int[] array, IntBinaryOperator op)
Cumulates, in parallel, each element of the given array in place, using the supplied function. For example if the array initially holds[2, 1, 0, 3]
and the operation performs addition, then upon return the array holds[2, 3, 3, 6]
. Parallel prefix computation is usually more efficient than sequential loops for large arrays. Parameters:
array
 the array, which is modified inplace by this methodop
 a sideeffectfree, associative function to perform the cumulation Throws:
NullPointerException
 if the specified array or function is null Since:
 1.8

parallelPrefix
public static void parallelPrefix(int[] array, int fromIndex, int toIndex, IntBinaryOperator op)
PerformsparallelPrefix(int[], IntBinaryOperator)
for the given subrange of the array. Parameters:
array
 the arrayfromIndex
 the index of the first element, inclusivetoIndex
 the index of the last element, exclusiveop
 a sideeffectfree, associative function to perform the cumulation Throws:
IllegalArgumentException
 iffromIndex > toIndex
ArrayIndexOutOfBoundsException
 iffromIndex < 0
ortoIndex > array.length
NullPointerException
 if the specified array or function is null Since:
 1.8

binarySearch
public static int binarySearch(long[] a, long key)
Searches the specified array of longs for the specified value using the binary search algorithm. The array must be sorted (as by thesort(long[])
method) prior to making this call. If it is not sorted, the results are undefined. If the array contains multiple elements with the specified value, there is no guarantee which one will be found. Parameters:
a
 the array to be searchedkey
 the value to be searched for Returns:
 index of the search key, if it is contained in the array;
otherwise,
((insertion point)  1)
. The insertion point is defined as the point at which the key would be inserted into the array: the index of the first element greater than the key, ora.length
if all elements in the array are less than the specified key. Note that this guarantees that the return value will be >= 0 if and only if the key is found.

binarySearch
public static int binarySearch(long[] a, int fromIndex, int toIndex, long key)
Searches a range of the specified array of longs for the specified value using the binary search algorithm. The range must be sorted (as by thesort(long[], int, int)
method) prior to making this call. If it is not sorted, the results are undefined. If the range contains multiple elements with the specified value, there is no guarantee which one will be found. Parameters:
a
 the array to be searchedfromIndex
 the index of the first element (inclusive) to be searchedtoIndex
 the index of the last element (exclusive) to be searchedkey
 the value to be searched for Returns:
 index of the search key, if it is contained in the array
within the specified range;
otherwise,
((insertion point)  1)
. The insertion point is defined as the point at which the key would be inserted into the array: the index of the first element in the range greater than the key, ortoIndex
if all elements in the range are less than the specified key. Note that this guarantees that the return value will be >= 0 if and only if the key is found.  Throws:
IllegalArgumentException
 iffromIndex > toIndex
ArrayIndexOutOfBoundsException
 iffromIndex < 0 or toIndex > a.length
 Since:
 1.6

binarySearch
public static int binarySearch(int[] a, int key)
Searches the specified array of ints for the specified value using the binary search algorithm. The array must be sorted (as by thesort(int[])
method) prior to making this call. If it is not sorted, the results are undefined. If the array contains multiple elements with the specified value, there is no guarantee which one will be found. Parameters:
a
 the array to be searchedkey
 the value to be searched for Returns:
 index of the search key, if it is contained in the array;
otherwise,
((insertion point)  1)
. The insertion point is defined as the point at which the key would be inserted into the array: the index of the first element greater than the key, ora.length
if all elements in the array are less than the specified key. Note that this guarantees that the return value will be >= 0 if and only if the key is found.

binarySearch
public static int binarySearch(int[] a, int fromIndex, int toIndex, int key)
Searches a range of the specified array of ints for the specified value using the binary search algorithm. The range must be sorted (as by thesort(int[], int, int)
method) prior to making this call. If it is not sorted, the results are undefined. If the range contains multiple elements with the specified value, there is no guarantee which one will be found. Parameters:
a
 the array to be searchedfromIndex
 the index of the first element (inclusive) to be searchedtoIndex
 the index of the last element (exclusive) to be searchedkey
 the value to be searched for Returns:
 index of the search key, if it is contained in the array
within the specified range;
otherwise,
((insertion point)  1)
. The insertion point is defined as the point at which the key would be inserted into the array: the index of the first element in the range greater than the key, ortoIndex
if all elements in the range are less than the specified key. Note that this guarantees that the return value will be >= 0 if and only if the key is found.  Throws:
IllegalArgumentException
 iffromIndex > toIndex
ArrayIndexOutOfBoundsException
 iffromIndex < 0 or toIndex > a.length
 Since:
 1.6

binarySearch
public static int binarySearch(short[] a, short key)
Searches the specified array of shorts for the specified value using the binary search algorithm. The array must be sorted (as by thesort(short[])
method) prior to making this call. If it is not sorted, the results are undefined. If the array contains multiple elements with the specified value, there is no guarantee which one will be found. Parameters:
a
 the array to be searchedkey
 the value to be searched for Returns:
 index of the search key, if it is contained in the array;
otherwise,
((insertion point)  1)
. The insertion point is defined as the point at which the key would be inserted into the array: the index of the first element greater than the key, ora.length
if all elements in the array are less than the specified key. Note that this guarantees that the return value will be >= 0 if and only if the key is found.

binarySearch
public static int binarySearch(short[] a, int fromIndex, int toIndex, short key)
Searches a range of the specified array of shorts for the specified value using the binary search algorithm. The range must be sorted (as by thesort(short[], int, int)
method) prior to making this call. If it is not sorted, the results are undefined. If the range contains multiple elements with the specified value, there is no guarantee which one will be found. Parameters:
a
 the array to be searchedfromIndex
 the index of the first element (inclusive) to be searchedtoIndex
 the index of the last element (exclusive) to be searchedkey
 the value to be searched for Returns:
 index of the search key, if it is contained in the array
within the specified range;
otherwise,
((insertion point)  1)
. The insertion point is defined as the point at which the key would be inserted into the array: the index of the first element in the range greater than the key, ortoIndex
if all elements in the range are less than the specified key. Note that this guarantees that the return value will be >= 0 if and only if the key is found.  Throws:
IllegalArgumentException
 iffromIndex > toIndex
ArrayIndexOutOfBoundsException
 iffromIndex < 0 or toIndex > a.length
 Since:
 1.6

binarySearch
public static int binarySearch(char[] a, char key)
Searches the specified array of chars for the specified value using the binary search algorithm. The array must be sorted (as by thesort(char[])
method) prior to making this call. If it is not sorted, the results are undefined. If the array contains multiple elements with the specified value, there is no guarantee which one will be found. Parameters:
a
 the array to be searchedkey
 the value to be searched for Returns:
 index of the search key, if it is contained in the array;
otherwise,
((insertion point)  1)
. The insertion point is defined as the point at which the key would be inserted into the array: the index of the first element greater than the key, ora.length
if all elements in the array are less than the specified key. Note that this guarantees that the return value will be >= 0 if and only if the key is found.

binarySearch
public static int binarySearch(char[] a, int fromIndex, int toIndex, char key)
Searches a range of the specified array of chars for the specified value using the binary search algorithm. The range must be sorted (as by thesort(char[], int, int)
method) prior to making this call. If it is not sorted, the results are undefined. If the range contains multiple elements with the specified value, there is no guarantee which one will be found. Parameters:
a
 the array to be searchedfromIndex
 the index of the first element (inclusive) to be searchedtoIndex
 the index of the last element (exclusive) to be searchedkey
 the value to be searched for Returns:
 index of the search key, if it is contained in the array
within the specified range;
otherwise,
((insertion point)  1)
. The insertion point is defined as the point at which the key would be inserted into the array: the index of the first element in the range greater than the key, ortoIndex
if all elements in the range are less than the specified key. Note that this guarantees that the return value will be >= 0 if and only if the key is found.  Throws:
IllegalArgumentException
 iffromIndex > toIndex
ArrayIndexOutOfBoundsException
 iffromIndex < 0 or toIndex > a.length
 Since:
 1.6

binarySearch
public static int binarySearch(byte[] a, byte key)
Searches the specified array of bytes for the specified value using the binary search algorithm. The array must be sorted (as by thesort(byte[])
method) prior to making this call. If it is not sorted, the results are undefined. If the array contains multiple elements with the specified value, there is no guarantee which one will be found. Parameters:
a
 the array to be searchedkey
 the value to be searched for Returns:
 index of the search key, if it is contained in the array;
otherwise,
((insertion point)  1)
. The insertion point is defined as the point at which the key would be inserted into the array: the index of the first element greater than the key, ora.length
if all elements in the array are less than the specified key. Note that this guarantees that the return value will be >= 0 if and only if the key is found.

binarySearch
public static int binarySearch(byte[] a, int fromIndex, int toIndex, byte key)
Searches a range of the specified array of bytes for the specified value using the binary search algorithm. The range must be sorted (as by thesort(byte[], int, int)
method) prior to making this call. If it is not sorted, the results are undefined. If the range contains multiple elements with the specified value, there is no guarantee which one will be found. Parameters:
a
 the array to be searchedfromIndex
 the index of the first element (inclusive) to be searchedtoIndex
 the index of the last element (exclusive) to be searchedkey
 the value to be searched for Returns:
 index of the search key, if it is contained in the array
within the specified range;
otherwise,
((insertion point)  1)
. The insertion point is defined as the point at which the key would be inserted into the array: the index of the first element in the range greater than the key, ortoIndex
if all elements in the range are less than the specified key. Note that this guarantees that the return value will be >= 0 if and only if the key is found.  Throws:
IllegalArgumentException
 iffromIndex > toIndex
ArrayIndexOutOfBoundsException
 iffromIndex < 0 or toIndex > a.length
 Since:
 1.6

binarySearch
public static int binarySearch(double[] a, double key)
Searches the specified array of doubles for the specified value using the binary search algorithm. The array must be sorted (as by thesort(double[])
method) prior to making this call. If it is not sorted, the results are undefined. If the array contains multiple elements with the specified value, there is no guarantee which one will be found. This method considers all NaN values to be equivalent and equal. Parameters:
a
 the array to be searchedkey
 the value to be searched for Returns:
 index of the search key, if it is contained in the array;
otherwise,
((insertion point)  1)
. The insertion point is defined as the point at which the key would be inserted into the array: the index of the first element greater than the key, ora.length
if all elements in the array are less than the specified key. Note that this guarantees that the return value will be >= 0 if and only if the key is found.

binarySearch
public static int binarySearch(double[] a, int fromIndex, int toIndex, double key)
Searches a range of the specified array of doubles for the specified value using the binary search algorithm. The range must be sorted (as by thesort(double[], int, int)
method) prior to making this call. If it is not sorted, the results are undefined. If the range contains multiple elements with the specified value, there is no guarantee which one will be found. This method considers all NaN values to be equivalent and equal. Parameters:
a
 the array to be searchedfromIndex
 the index of the first element (inclusive) to be searchedtoIndex
 the index of the last element (exclusive) to be searchedkey
 the value to be searched for Returns:
 index of the search key, if it is contained in the array
within the specified range;
otherwise,
((insertion point)  1)
. The insertion point is defined as the point at which the key would be inserted into the array: the index of the first element in the range greater than the key, ortoIndex
if all elements in the range are less than the specified key. Note that this guarantees that the return value will be >= 0 if and only if the key is found.  Throws:
IllegalArgumentException
 iffromIndex > toIndex
ArrayIndexOutOfBoundsException
 iffromIndex < 0 or toIndex > a.length
 Since:
 1.6

binarySearch
public static int binarySearch(float[] a, float key)
Searches the specified array of floats for the specified value using the binary search algorithm. The array must be sorted (as by thesort(float[])
method) prior to making this call. If it is not sorted, the results are undefined. If the array contains multiple elements with the specified value, there is no guarantee which one will be found. This method considers all NaN values to be equivalent and equal. Parameters:
a
 the array to be searchedkey
 the value to be searched for Returns:
 index of the search key, if it is contained in the array;
otherwise,
((insertion point)  1)
. The insertion point is defined as the point at which the key would be inserted into the array: the index of the first element greater than the key, ora.length
if all elements in the array are less than the specified key. Note that this guarantees that the return value will be >= 0 if and only if the key is found.

binarySearch
public static int binarySearch(float[] a, int fromIndex, int toIndex, float key)
Searches a range of the specified array of floats for the specified value using the binary search algorithm. The range must be sorted (as by thesort(float[], int, int)
method) prior to making this call. If it is not sorted, the results are undefined. If the range contains multiple elements with the specified value, there is no guarantee which one will be found. This method considers all NaN values to be equivalent and equal. Parameters:
a
 the array to be searchedfromIndex
 the index of the first element (inclusive) to be searchedtoIndex
 the index of the last element (exclusive) to be searchedkey
 the value to be searched for Returns:
 index of the search key, if it is contained in the array
within the specified range;
otherwise,
((insertion point)  1)
. The insertion point is defined as the point at which the key would be inserted into the array: the index of the first element in the range greater than the key, ortoIndex
if all elements in the range are less than the specified key. Note that this guarantees that the return value will be >= 0 if and only if the key is found.  Throws:
IllegalArgumentException
 iffromIndex > toIndex
ArrayIndexOutOfBoundsException
 iffromIndex < 0 or toIndex > a.length
 Since:
 1.6

binarySearch
public static int binarySearch(Object[] a, Object key)
Searches the specified array for the specified object using the binary search algorithm. The array must be sorted into ascending order according to the natural ordering of its elements (as by thesort(Object[])
method) prior to making this call. If it is not sorted, the results are undefined. (If the array contains elements that are not mutually comparable (for example, strings and integers), it cannot be sorted according to the natural ordering of its elements, hence results are undefined.) If the array contains multiple elements equal to the specified object, there is no guarantee which one will be found. Parameters:
a
 the array to be searchedkey
 the value to be searched for Returns:
 index of the search key, if it is contained in the array;
otherwise,
((insertion point)  1)
. The insertion point is defined as the point at which the key would be inserted into the array: the index of the first element greater than the key, ora.length
if all elements in the array are less than the specified key. Note that this guarantees that the return value will be >= 0 if and only if the key is found.  Throws:
ClassCastException
 if the search key is not comparable to the elements of the array.

binarySearch
public static int binarySearch(Object[] a, int fromIndex, int toIndex, Object key)
Searches a range of the specified array for the specified object using the binary search algorithm. The range must be sorted into ascending order according to the natural ordering of its elements (as by thesort(Object[], int, int)
method) prior to making this call. If it is not sorted, the results are undefined. (If the range contains elements that are not mutually comparable (for example, strings and integers), it cannot be sorted according to the natural ordering of its elements, hence results are undefined.) If the range contains multiple elements equal to the specified object, there is no guarantee which one will be found. Parameters:
a
 the array to be searchedfromIndex
 the index of the first element (inclusive) to be searchedtoIndex
 the index of the last element (exclusive) to be searchedkey
 the value to be searched for Returns:
 index of the search key, if it is contained in the array
within the specified range;
otherwise,
((insertion point)  1)
. The insertion point is defined as the point at which the key would be inserted into the array: the index of the first element in the range greater than the key, ortoIndex
if all elements in the range are less than the specified key. Note that this guarantees that the return value will be >= 0 if and only if the key is found.  Throws:
ClassCastException
 if the search key is not comparable to the elements of the array within the specified range.IllegalArgumentException
 iffromIndex > toIndex
ArrayIndexOutOfBoundsException
 iffromIndex < 0 or toIndex > a.length
 Since:
 1.6

binarySearch
public static <T> int binarySearch(T[] a, T key, Comparator<? super T> c)
Searches the specified array for the specified object using the binary search algorithm. The array must be sorted into ascending order according to the specified comparator (as by thesort(T[], Comparator)
method) prior to making this call. If it is not sorted, the results are undefined. If the array contains multiple elements equal to the specified object, there is no guarantee which one will be found. Type Parameters:
T
 the class of the objects in the array Parameters:
a
 the array to be searchedkey
 the value to be searched forc
 the comparator by which the array is ordered. Anull
value indicates that the elements' natural ordering should be used. Returns:
 index of the search key, if it is contained in the array;
otherwise,
((insertion point)  1)
. The insertion point is defined as the point at which the key would be inserted into the array: the index of the first element greater than the key, ora.length
if all elements in the array are less than the specified key. Note that this guarantees that the return value will be >= 0 if and only if the key is found.  Throws:
ClassCastException
 if the array contains elements that are not mutually comparable using the specified comparator, or the search key is not comparable to the elements of the array using this comparator.

binarySearch
public static <T> int binarySearch(T[] a, int fromIndex, int toIndex, T key, Comparator<? super T> c)
Searches a range of the specified array for the specified object using the binary search algorithm. The range must be sorted into ascending order according to the specified comparator (as by thesort(T[], int, int, Comparator)
method) prior to making this call. If it is not sorted, the results are undefined. If the range contains multiple elements equal to the specified object, there is no guarantee which one will be found. Type Parameters:
T
 the class of the objects in the array Parameters:
a
 the array to be searchedfromIndex
 the index of the first element (inclusive) to be searchedtoIndex
 the index of the last element (exclusive) to be searchedkey
 the value to be searched forc
 the comparator by which the array is ordered. Anull
value indicates that the elements' natural ordering should be used. Returns:
 index of the search key, if it is contained in the array
within the specified range;
otherwise,
((insertion point)  1)
. The insertion point is defined as the point at which the key would be inserted into the array: the index of the first element in the range greater than the key, ortoIndex
if all elements in the range are less than the specified key. Note that this guarantees that the return value will be >= 0 if and only if the key is found.  Throws:
ClassCastException
 if the range contains elements that are not mutually comparable using the specified comparator, or the search key is not comparable to the elements in the range using this comparator.IllegalArgumentException
 iffromIndex > toIndex
ArrayIndexOutOfBoundsException
 iffromIndex < 0 or toIndex > a.length
 Since:
 1.6

equals
public static boolean equals(long[] a, long[] a2)
Returnstrue
if the two specified arrays of longs are equal to one another. Two arrays are considered equal if both arrays contain the same number of elements, and all corresponding pairs of elements in the two arrays are equal. In other words, two arrays are equal if they contain the same elements in the same order. Also, two array references are considered equal if both arenull
. Parameters:
a
 one array to be tested for equalitya2
 the other array to be tested for equality Returns:
true
if the two arrays are equal

equals
public static boolean equals(long[] a, int aFromIndex, int aToIndex, long[] b, int bFromIndex, int bToIndex)
Returns true if the two specified arrays of longs, over the specified ranges, are equal to one another.Two arrays are considered equal if the number of elements covered by each range is the same, and all corresponding pairs of elements over the specified ranges in the two arrays are equal. In other words, two arrays are equal if they contain, over the specified ranges, the same elements in the same order.
 Parameters:
a
 the first array to be tested for equalityaFromIndex
 the index (inclusive) of the first element in the first array to be testedaToIndex
 the index (exclusive) of the last element in the first array to be testedb
 the second array to be tested fro equalitybFromIndex
 the index (inclusive) of the first element in the second array to be testedbToIndex
 the index (exclusive) of the last element in the second array to be tested Returns:
true
if the two arrays, over the specified ranges, are equal Throws:
IllegalArgumentException
 ifaFromIndex > aToIndex
or ifbFromIndex > bToIndex
ArrayIndexOutOfBoundsException
 ifaFromIndex < 0 or aToIndex > a.length
or ifbFromIndex < 0 or bToIndex > b.length
NullPointerException
 if either array isnull
 Since:
 9

equals
public static boolean equals(int[] a, int[] a2)
Returnstrue
if the two specified arrays of ints are equal to one another. Two arrays are considered equal if both arrays contain the same number of elements, and all corresponding pairs of elements in the two arrays are equal. In other words, two arrays are equal if they contain the same elements in the same order. Also, two array references are considered equal if both arenull
. Parameters:
a
 one array to be tested for equalitya2
 the other array to be tested for equality Returns:
true
if the two arrays are equal

equals
public static boolean equals(int[] a, int aFromIndex, int aToIndex, int[] b, int bFromIndex, int bToIndex)
Returns true if the two specified arrays of ints, over the specified ranges, are equal to one another.Two arrays are considered equal if the number of elements covered by each range is the same, and all corresponding pairs of elements over the specified ranges in the two arrays are equal. In other words, two arrays are equal if they contain, over the specified ranges, the same elements in the same order.
 Parameters:
a
 the first array to be tested for equalityaFromIndex
 the index (inclusive) of the first element in the first array to be testedaToIndex
 the index (exclusive) of the last element in the first array to be testedb
 the second array to be tested fro equalitybFromIndex
 the index (inclusive) of the first element in the second array to be testedbToIndex
 the index (exclusive) of the last element in the second array to be tested Returns:
true
if the two arrays, over the specified ranges, are equal Throws:
IllegalArgumentException
 ifaFromIndex > aToIndex
or ifbFromIndex > bToIndex
ArrayIndexOutOfBoundsException
 ifaFromIndex < 0 or aToIndex > a.length
or ifbFromIndex < 0 or bToIndex > b.length
NullPointerException
 if either array isnull
 Since:
 9

equals
public static boolean equals(short[] a, short[] a2)
Returnstrue
if the two specified arrays of shorts are equal to one another. Two arrays are considered equal if both arrays contain the same number of elements, and all corresponding pairs of elements in the two arrays are equal. In other words, two arrays are equal if they contain the same elements in the same order. Also, two array references are considered equal if both arenull
. Parameters:
a
 one array to be tested for equalitya2
 the other array to be tested for equality Returns:
true
if the two arrays are equal

equals
public static boolean equals(short[] a, int aFromIndex, int aToIndex, short[] b, int bFromIndex, int bToIndex)
Returns true if the two specified arrays of shorts, over the specified ranges, are equal to one another.Two arrays are considered equal if the number of elements covered by each range is the same, and all corresponding pairs of elements over the specified ranges in the two arrays are equal. In other words, two arrays are equal if they contain, over the specified ranges, the same elements in the same order.
 Parameters:
a
 the first array to be tested for equalityaFromIndex
 the index (inclusive) of the first element in the first array to be testedaToIndex
 the index (exclusive) of the last element in the first array to be testedb
 the second array to be tested fro equalitybFromIndex
 the index (inclusive) of the first element in the second array to be testedbToIndex
 the index (exclusive) of the last element in the second array to be tested Returns:
true
if the two arrays, over the specified ranges, are equal Throws:
IllegalArgumentException
 ifaFromIndex > aToIndex
or ifbFromIndex > bToIndex
ArrayIndexOutOfBoundsException
 ifaFromIndex < 0 or aToIndex > a.length
or ifbFromIndex < 0 or bToIndex > b.length
NullPointerException
 if either array isnull
 Since:
 9

equals
public static boolean equals(char[] a, char[] a2)
Returnstrue
if the two specified arrays of chars are equal to one another. Two arrays are considered equal if both arrays contain the same number of elements, and all corresponding pairs of elements in the two arrays are equal. In other words, two arrays are equal if they contain the same elements in the same order. Also, two array references are considered equal if both arenull
. Parameters:
a
 one array to be tested for equalitya2
 the other array to be tested for equality Returns:
true
if the two arrays are equal

equals
public static boolean equals(char[] a, int aFromIndex, int aToIndex, char[] b, int bFromIndex, int bToIndex)
Returns true if the two specified arrays of chars, over the specified ranges, are equal to one another.Two arrays are considered equal if the number of elements covered by each range is the same, and all corresponding pairs of elements over the specified ranges in the two arrays are equal. In other words, two arrays are equal if they contain, over the specified ranges, the same elements in the same order.
 Parameters:
a
 the first array to be tested for equalityaFromIndex
 the index (inclusive) of the first element in the first array to be testedaToIndex
 the index (exclusive) of the last element in the first array to be testedb
 the second array to be tested fro equalitybFromIndex
 the index (inclusive) of the first element in the second array to be testedbToIndex
 the index (exclusive) of the last element in the second array to be tested Returns:
true
if the two arrays, over the specified ranges, are equal Throws:
IllegalArgumentException
 ifaFromIndex > aToIndex
or ifbFromIndex > bToIndex
ArrayIndexOutOfBoundsException
 ifaFromIndex < 0 or aToIndex > a.length
or ifbFromIndex < 0 or bToIndex > b.length
NullPointerException
 if either array isnull
 Since:
 9

equals
public static boolean equals(byte[] a, byte[] a2)
Returnstrue
if the two specified arrays of bytes are equal to one another. Two arrays are considered equal if both arrays contain the same number of elements, and all corresponding pairs of elements in the two arrays are equal. In other words, two arrays are equal if they contain the same elements in the same order. Also, two array references are considered equal if both arenull
. Parameters:
a
 one array to be tested for equalitya2
 the other array to be tested for equality Returns:
true
if the two arrays are equal

equals
public static boolean equals(byte[] a, int aFromIndex, int aToIndex, byte[] b, int bFromIndex, int bToIndex)
Returns true if the two specified arrays of bytes, over the specified ranges, are equal to one another.Two arrays are considered equal if the number of elements covered by each range is the same, and all corresponding pairs of elements over the specified ranges in the two arrays are equal. In other words, two arrays are equal if they contain, over the specified ranges, the same elements in the same order.
 Parameters:
a
 the first array to be tested for equalityaFromIndex
 the index (inclusive) of the first element in the first array to be testedaToIndex
 the index (exclusive) of the last element in the first array to be testedb
 the second array to be tested fro equalitybFromIndex
 the index (inclusive) of the first element in the second array to be testedbToIndex
 the index (exclusive) of the last element in the second array to be tested Returns:
true
if the two arrays, over the specified ranges, are equal Throws:
IllegalArgumentException
 ifaFromIndex > aToIndex
or ifbFromIndex > bToIndex
ArrayIndexOutOfBoundsException
 ifaFromIndex < 0 or aToIndex > a.length
or ifbFromIndex < 0 or bToIndex > b.length
NullPointerException
 if either array isnull
 Since:
 9

equals
public static boolean equals(boolean[] a, boolean[] a2)
Returnstrue
if the two specified arrays of booleans are equal to one another. Two arrays are considered equal if both arrays contain the same number of elements, and all corresponding pairs of elements in the two arrays are equal. In other words, two arrays are equal if they contain the same elements in the same order. Also, two array references are considered equal if both arenull
. Parameters:
a
 one array to be tested for equalitya2
 the other array to be tested for equality Returns:
true
if the two arrays are equal

equals
public static boolean equals(boolean[] a, int aFromIndex, int aToIndex, boolean[] b, int bFromIndex, int bToIndex)
Returns true if the two specified arrays of booleans, over the specified ranges, are equal to one another.Two arrays are considered equal if the number of elements covered by each range is the same, and all corresponding pairs of elements over the specified ranges in the two arrays are equal. In other words, two arrays are equal if they contain, over the specified ranges, the same elements in the same order.
 Parameters:
a
 the first array to be tested for equalityaFromIndex
 the index (inclusive) of the first element in the first array to be testedaToIndex
 the index (exclusive) of the last element in the first array to be testedb
 the second array to be tested fro equalitybFromIndex
 the index (inclusive) of the first element in the second array to be testedbToIndex
 the index (exclusive) of the last element in the second array to be tested Returns:
true
if the two arrays, over the specified ranges, are equal Throws:
IllegalArgumentException
 ifaFromIndex > aToIndex
or ifbFromIndex > bToIndex
ArrayIndexOutOfBoundsException
 ifaFromIndex < 0 or aToIndex > a.length
or ifbFromIndex < 0 or bToIndex > b.length
NullPointerException
 if either array isnull
 Since:
 9

equals
public static boolean equals(double[] a, double[] a2)
Returnstrue
if the two specified arrays of doubles are equal to one another. Two arrays are considered equal if both arrays contain the same number of elements, and all corresponding pairs of elements in the two arrays are equal. In other words, two arrays are equal if they contain the same elements in the same order. Also, two array references are considered equal if both arenull
. Two doublesd1
andd2
are considered equal if:new Double(d1).equals(new Double(d2))
==
operator, this method considersNaN
equals to itself, and 0.0d unequal to 0.0d.) Parameters:
a
 one array to be tested for equalitya2
 the other array to be tested for equality Returns:
true
if the two arrays are equal See Also:
Double.equals(Object)

equals
public static boolean equals(double[] a, int aFromIndex, int aToIndex, double[] b, int bFromIndex, int bToIndex)
Returns true if the two specified arrays of doubles, over the specified ranges, are equal to one another.Two arrays are considered equal if the number of elements covered by each range is the same, and all corresponding pairs of elements over the specified ranges in the two arrays are equal. In other words, two arrays are equal if they contain, over the specified ranges, the same elements in the same order.
Two doubles
d1
andd2
are considered equal if:new Double(d1).equals(new Double(d2))
==
operator, this method considersNaN
equals to itself, and 0.0d unequal to 0.0d.) Parameters:
a
 the first array to be tested for equalityaFromIndex
 the index (inclusive) of the first element in the first array to be testedaToIndex
 the index (exclusive) of the last element in the first array to be testedb
 the second array to be tested fro equalitybFromIndex
 the index (inclusive) of the first element in the second array to be testedbToIndex
 the index (exclusive) of the last element in the second array to be tested Returns:
true
if the two arrays, over the specified ranges, are equal Throws:
IllegalArgumentException
 ifaFromIndex > aToIndex
or ifbFromIndex > bToIndex
ArrayIndexOutOfBoundsException
 ifaFromIndex < 0 or aToIndex > a.length
or ifbFromIndex < 0 or bToIndex > b.length
NullPointerException
 if either array isnull
 Since:
 9
 See Also:
Double.equals(Object)

equals
public static boolean equals(float[] a, float[] a2)
Returnstrue
if the two specified arrays of floats are equal to one another. Two arrays are considered equal if both arrays contain the same number of elements, and all corresponding pairs of elements in the two arrays are equal. In other words, two arrays are equal if they contain the same elements in the same order. Also, two array references are considered equal if both arenull
. Two floatsf1
andf2
are considered equal if:new Float(f1).equals(new Float(f2))
==
operator, this method considersNaN
equals to itself, and 0.0f unequal to 0.0f.) Parameters:
a
 one array to be tested for equalitya2
 the other array to be tested for equality Returns:
true
if the two arrays are equal See Also:
Float.equals(Object)

equals
public static boolean equals(float[] a, int aFromIndex, int aToIndex, float[] b, int bFromIndex, int bToIndex)
Returns true if the two specified arrays of floats, over the specified ranges, are equal to one another.Two arrays are considered equal if the number of elements covered by each range is the same, and all corresponding pairs of elements over the specified ranges in the two arrays are equal. In other words, two arrays are equal if they contain, over the specified ranges, the same elements in the same order.
Two floats
f1
andf2
are considered equal if:new Float(f1).equals(new Float(f2))
==
operator, this method considersNaN
equals to itself, and 0.0f unequal to 0.0f.) Parameters:
a
 the first array to be tested for equalityaFromIndex
 the index (inclusive) of the first element in the first array to be testedaToIndex
 the index (exclusive) of the last element in the first array to be testedb
 the second array to be tested fro equalitybFromIndex
 the index (inclusive) of the first element in the second array to be testedbToIndex
 the index (exclusive) of the last element in the second array to be tested Returns:
true
if the two arrays, over the specified ranges, are equal Throws:
IllegalArgumentException
 ifaFromIndex > aToIndex
or ifbFromIndex > bToIndex
ArrayIndexOutOfBoundsException
 ifaFromIndex < 0 or aToIndex > a.length
or ifbFromIndex < 0 or bToIndex > b.length
NullPointerException
 if either array isnull
 Since:
 9
 See Also:
Float.equals(Object)

equals
public static boolean equals(Object[] a, Object[] a2)
Returnstrue
if the two specified arrays of Objects are equal to one another. The two arrays are considered equal if both arrays contain the same number of elements, and all corresponding pairs of elements in the two arrays are equal. Two objectse1
ande2
are considered equal ifObjects.equals(e1, e2)
. In other words, the two arrays are equal if they contain the same elements in the same order. Also, two array references are considered equal if both arenull
. Parameters:
a
 one array to be tested for equalitya2
 the other array to be tested for equality Returns:
true
if the two arrays are equal

equals
public static boolean equals(Object[] a, int aFromIndex, int aToIndex, Object[] b, int bFromIndex, int bToIndex)
Returns true if the two specified arrays of Objects, over the specified ranges, are equal to one another.Two arrays are considered equal if the number of elements covered by each range is the same, and all corresponding pairs of elements over the specified ranges in the two arrays are equal. In other words, two arrays are equal if they contain, over the specified ranges, the same elements in the same order.
Two objects
e1
ande2
are considered equal ifObjects.equals(e1, e2)
. Parameters:
a
 the first array to be tested for equalityaFromIndex
 the index (inclusive) of the first element in the first array to be testedaToIndex
 the index (exclusive) of the last element in the first array to be testedb
 the second array to be tested fro equalitybFromIndex
 the index (inclusive) of the first element in the second array to be testedbToIndex
 the index (exclusive) of the last element in the second array to be tested Returns:
true
if the two arrays, over the specified ranges, are equal Throws:
IllegalArgumentException
 ifaFromIndex > aToIndex
or ifbFromIndex > bToIndex
ArrayIndexOutOfBoundsException
 ifaFromIndex < 0 or aToIndex > a.length
or ifbFromIndex < 0 or bToIndex > b.length
NullPointerException
 if either array isnull
 Since:
 9

equals
public static <T> boolean equals(T[] a, T[] a2, Comparator<? super T> cmp)
Returnstrue
if the two specified arrays of Objects are equal to one another.Two arrays are considered equal if both arrays contain the same number of elements, and all corresponding pairs of elements in the two arrays are equal. In other words, the two arrays are equal if they contain the same elements in the same order. Also, two array references are considered equal if both are
null
.Two objects
e1
ande2
are considered equal if, given the specified comparator,cmp.compare(e1, e2) == 0
. Type Parameters:
T
 the type of array elements Parameters:
a
 one array to be tested for equalitya2
 the other array to be tested for equalitycmp
 the comparator to compare array elements Returns:
true
if the two arrays are equal Throws:
NullPointerException
 if the comparator isnull
 Since:
 9

equals
public static <T> boolean equals(T[] a, int aFromIndex, int aToIndex, T[] b, int bFromIndex, int bToIndex, Comparator<? super T> cmp)
Returns true if the two specified arrays of Objects, over the specified ranges, are equal to one another.Two arrays are considered equal if the number of elements covered by each range is the same, and all corresponding pairs of elements over the specified ranges in the two arrays are equal. In other words, two arrays are equal if they contain, over the specified ranges, the same elements in the same order.
Two objects
e1
ande2
are considered equal if, given the specified comparator,cmp.compare(e1, e2) == 0
. Type Parameters:
T
 the type of array elements Parameters:
a
 the first array to be tested for equalityaFromIndex
 the index (inclusive) of the first element in the first array to be testedaToIndex
 the index (exclusive) of the last element in the first array to be testedb
 the second array to be tested fro equalitybFromIndex
 the index (inclusive) of the first element in the second array to be testedbToIndex
 the index (exclusive) of the last element in the second array to be testedcmp
 the comparator to compare array elements Returns:
true
if the two arrays, over the specified ranges, are equal Throws:
IllegalArgumentException
 ifaFromIndex > aToIndex
or ifbFromIndex > bToIndex
ArrayIndexOutOfBoundsException
 ifaFromIndex < 0 or aToIndex > a.length
or ifbFromIndex < 0 or bToIndex > b.length
NullPointerException
 if either array or the comparator isnull
 Since:
 9

fill
public static void fill(long[] a, long val)
Assigns the specified long value to each element of the specified array of longs. Parameters:
a
 the array to be filledval
 the value to be stored in all elements of the array

fill
public static void fill(long[] a, int fromIndex, int toIndex, long val)
Assigns the specified long value to each element of the specified range of the specified array of longs. The range to be filled extends from indexfromIndex
, inclusive, to indextoIndex
, exclusive. (IffromIndex==toIndex
, the range to be filled is empty.) Parameters:
a
 the array to be filledfromIndex
 the index of the first element (inclusive) to be filled with the specified valuetoIndex
 the index of the last element (exclusive) to be filled with the specified valueval
 the value to be stored in all elements of the array Throws:
IllegalArgumentException
 iffromIndex > toIndex
ArrayIndexOutOfBoundsException
 iffromIndex < 0
ortoIndex > a.length

fill
public static void fill(int[] a, int val)
Assigns the specified int value to each element of the specified array of ints. Parameters:
a
 the array to be filledval
 the value to be stored in all elements of the array

fill
public static void fill(int[] a, int fromIndex, int toIndex, int val)
Assigns the specified int value to each element of the specified range of the specified array of ints. The range to be filled extends from indexfromIndex
, inclusive, to indextoIndex
, exclusive. (IffromIndex==toIndex
, the range to be filled is empty.) Parameters:
a
 the array to be filledfromIndex
 the index of the first element (inclusive) to be filled with the specified valuetoIndex
 the index of the last element (exclusive) to be filled with the specified valueval
 the value to be stored in all elements of the array Throws:
IllegalArgumentException
 iffromIndex > toIndex
ArrayIndexOutOfBoundsException
 iffromIndex < 0
ortoIndex > a.length

fill
public static void fill(short[] a, short val)
Assigns the specified short value to each element of the specified array of shorts. Parameters:
a
 the array to be filledval
 the value to be stored in all elements of the array

fill
public static void fill(short[] a, int fromIndex, int toIndex, short val)
Assigns the specified short value to each element of the specified range of the specified array of shorts. The range to be filled extends from indexfromIndex
, inclusive, to indextoIndex
, exclusive. (IffromIndex==toIndex
, the range to be filled is empty.) Parameters:
a
 the array to be filledfromIndex
 the index of the first element (inclusive) to be filled with the specified valuetoIndex
 the index of the last element (exclusive) to be filled with the specified valueval
 the value to be stored in all elements of the array Throws:
IllegalArgumentException
 iffromIndex > toIndex
ArrayIndexOutOfBoundsException
 iffromIndex < 0
ortoIndex > a.length

fill
public static void fill(char[] a, char val)
Assigns the specified char value to each element of the specified array of chars. Parameters:
a
 the array to be filledval
 the value to be stored in all elements of the array

fill
public static void fill(char[] a, int fromIndex, int toIndex, char val)
Assigns the specified char value to each element of the specified range of the specified array of chars. The range to be filled extends from indexfromIndex
, inclusive, to indextoIndex
, exclusive. (IffromIndex==toIndex
, the range to be filled is empty.) Parameters:
a
 the array to be filledfromIndex
 the index of the first element (inclusive) to be filled with the specified valuetoIndex
 the index of the last element (exclusive) to be filled with the specified valueval
 the value to be stored in all elements of the array Throws:
IllegalArgumentException
 iffromIndex > toIndex
ArrayIndexOutOfBoundsException
 iffromIndex < 0
ortoIndex > a.length

fill
public static void fill(byte[] a, byte val)
Assigns the specified byte value to each element of the specified array of bytes. Parameters:
a
 the array to be filledval
 the value to be stored in all elements of the array

fill
public static void fill(byte[] a, int fromIndex, int toIndex, byte val)
Assigns the specified byte value to each element of the specified range of the specified array of bytes. The range to be filled extends from indexfromIndex
, inclusive, to indextoIndex
, exclusive. (IffromIndex==toIndex
, the range to be filled is empty.) Parameters:
a
 the array to be filledfromIndex
 the index of the first element (inclusive) to be filled with the specified valuetoIndex
 the index of the last element (exclusive) to be filled with the specified valueval
 the value to be stored in all elements of the array Throws:
IllegalArgumentException
 iffromIndex > toIndex
ArrayIndexOutOfBoundsException
 iffromIndex < 0
ortoIndex > a.length

fill
public static void fill(boolean[] a, boolean val)
Assigns the specified boolean value to each element of the specified array of booleans. Parameters:
a
 the array to be filledval
 the value to be stored in all elements of the array

fill
public static void fill(boolean[] a, int fromIndex, int toIndex, boolean val)
Assigns the specified boolean value to each element of the specified range of the specified array of booleans. The range to be filled extends from indexfromIndex
, inclusive, to indextoIndex
, exclusive. (IffromIndex==toIndex
, the range to be filled is empty.) Parameters:
a
 the array to be filledfromIndex
 the index of the first element (inclusive) to be filled with the specified valuetoIndex
 the index of the last element (exclusive) to be filled with the specified valueval
 the value to be stored in all elements of the array Throws:
IllegalArgumentException
 iffromIndex > toIndex
ArrayIndexOutOfBoundsException
 iffromIndex < 0
ortoIndex > a.length

fill
public static void fill(double[] a, double val)
Assigns the specified double value to each element of the specified array of doubles. Parameters:
a
 the array to be filledval
 the value to be stored in all elements of the array

fill
public static void fill(double[] a, int fromIndex, int toIndex, double val)
Assigns the specified double value to each element of the specified range of the specified array of doubles. The range to be filled extends from indexfromIndex
, inclusive, to indextoIndex
, exclusive. (IffromIndex==toIndex
, the range to be filled is empty.) Parameters:
a
 the array to be filledfromIndex
 the index of the first element (inclusive) to be filled with the specified valuetoIndex
 the index of the last element (exclusive) to be filled with the specified valueval
 the value to be stored in all elements of the array Throws:
IllegalArgumentException
 iffromIndex > toIndex
ArrayIndexOutOfBoundsException
 iffromIndex < 0
ortoIndex > a.length

fill
public static void fill(float[] a, float val)
Assigns the specified float value to each element of the specified array of floats. Parameters:
a
 the array to be filledval
 the value to be stored in all elements of the array

fill
public static void fill(float[] a, int fromIndex, int toIndex, float val)
Assigns the specified float value to each element of the specified range of the specified array of floats. The range to be filled extends from indexfromIndex
, inclusive, to indextoIndex
, exclusive. (IffromIndex==toIndex
, the range to be filled is empty.) Parameters:
a
 the array to be filledfromIndex
 the index of the first element (inclusive) to be filled with the specified valuetoIndex
 the index of the last element (exclusive) to be filled with the specified valueval
 the value to be stored in all elements of the array Throws:
IllegalArgumentException
 iffromIndex > toIndex
ArrayIndexOutOfBoundsException
 iffromIndex < 0
ortoIndex > a.length

fill
public static void fill(Object[] a, Object val)
Assigns the specified Object reference to each element of the specified array of Objects. Parameters:
a
 the array to be filledval
 the value to be stored in all elements of the array Throws:
ArrayStoreException
 if the specified value is not of a runtime type that can be stored in the specified array

fill
public static void fill(Object[] a, int fromIndex, int toIndex, Object val)
Assigns the specified Object reference to each element of the specified range of the specified array of Objects. The range to be filled extends from indexfromIndex
, inclusive, to indextoIndex
, exclusive. (IffromIndex==toIndex
, the range to be filled is empty.) Parameters:
a
 the array to be filledfromIndex
 the index of the first element (inclusive) to be filled with the specified valuetoIndex
 the index of the last element (exclusive) to be filled with the specified valueval
 the value to be stored in all elements of the array Throws:
IllegalArgumentException
 iffromIndex > toIndex
ArrayIndexOutOfBoundsException
 iffromIndex < 0
ortoIndex > a.length
ArrayStoreException
 if the specified value is not of a runtime type that can be stored in the specified array

copyOf
public static <T> T[] copyOf(T[] original, int newLength)
Copies the specified array, truncating or padding with nulls (if necessary) so the copy has the specified length. For all indices that are valid in both the original array and the copy, the two arrays will contain identical values. For any indices that are valid in the copy but not the original, the copy will containnull
. Such indices will exist if and only if the specified length is greater than that of the original array. The resulting array is of exactly the same class as the original array. Type Parameters:
T
 the class of the objects in the array Parameters:
original
 the array to be copiednewLength
 the length of the copy to be returned Returns:
 a copy of the original array, truncated or padded with nulls to obtain the specified length
 Throws:
NegativeArraySizeException
 ifnewLength
is negativeNullPointerException
 iforiginal
is null Since:
 1.6

copyOf
public static <T,U> T[] copyOf(U[] original, int newLength, Class<? extends T[]> newType)
Copies the specified array, truncating or padding with nulls (if necessary) so the copy has the specified length. For all indices that are valid in both the original array and the copy, the two arrays will contain identical values. For any indices that are valid in the copy but not the original, the copy will containnull
. Such indices will exist if and only if the specified length is greater than that of the original array. The resulting array is of the classnewType
. Type Parameters:
U
 the class of the objects in the original arrayT
 the class of the objects in the returned array Parameters:
original
 the array to be copiednewLength
 the length of the copy to be returnednewType
 the class of the copy to be returned Returns:
 a copy of the original array, truncated or padded with nulls to obtain the specified length
 Throws:
NegativeArraySizeException
 ifnewLength
is negativeNullPointerException
 iforiginal
is nullArrayStoreException
 if an element copied fromoriginal
is not of a runtime type that can be stored in an array of classnewType
 Since:
 1.6

copyOf
public static byte[] copyOf(byte[] original, int newLength)
Copies the specified array, truncating or padding with zeros (if necessary) so the copy has the specified length. For all indices that are valid in both the original array and the copy, the two arrays will contain identical values. For any indices that are valid in the copy but not the original, the copy will contain(byte)0
. Such indices will exist if and only if the specified length is greater than that of the original array. Parameters:
original
 the array to be copiednewLength
 the length of the copy to be returned Returns:
 a copy of the original array, truncated or padded with zeros to obtain the specified length
 Throws:
NegativeArraySizeException
 ifnewLength
is negativeNullPointerException
 iforiginal
is null Since:
 1.6

copyOf
public static short[] copyOf(short[] original, int newLength)
Copies the specified array, truncating or padding with zeros (if necessary) so the copy has the specified length. For all indices that are valid in both the original array and the copy, the two arrays will contain identical values. For any indices that are valid in the copy but not the original, the copy will contain(short)0
. Such indices will exist if and only if the specified length is greater than that of the original array. Parameters:
original
 the array to be copiednewLength
 the length of the copy to be returned Returns:
 a copy of the original array, truncated or padded with zeros to obtain the specified length
 Throws:
NegativeArraySizeException
 ifnewLength
is negativeNullPointerException
 iforiginal
is null Since:
 1.6

copyOf
public static int[] copyOf(int[] original, int newLength)
Copies the specified array, truncating or padding with zeros (if necessary) so the copy has the specified length. For all indices that are valid in both the original array and the copy, the two arrays will contain identical values. For any indices that are valid in the copy but not the original, the copy will contain0
. Such indices will exist if and only if the specified length is greater than that of the original array. Parameters:
original
 the array to be copiednewLength
 the length of the copy to be returned Returns:
 a copy of the original array, truncated or padded with zeros to obtain the specified length
 Throws:
NegativeArraySizeException
 ifnewLength
is negativeNullPointerException
 iforiginal
is null Since:
 1.6

copyOf
public static long[] copyOf(long[] original, int newLength)
Copies the specified array, truncating or padding with zeros (if necessary) so the copy has the specified length. For all indices that are valid in both the original array and the copy, the two arrays will contain identical values. For any indices that are valid in the copy but not the original, the copy will contain0L
. Such indices will exist if and only if the specified length is greater than that of the original array. Parameters:
original
 the array to be copiednewLength
 the length of the copy to be returned Returns:
 a copy of the original array, truncated or padded with zeros to obtain the specified length
 Throws:
NegativeArraySizeException
 ifnewLength
is negativeNullPointerException
 iforiginal
is null Since:
 1.6

copyOf
public static char[] copyOf(char[] original, int newLength)
Copies the specified array, truncating or padding with null characters (if necessary) so the copy has the specified length. For all indices that are valid in both the original array and the copy, the two arrays will contain identical values. For any indices that are valid in the copy but not the original, the copy will contain'\\u000'
. Such indices will exist if and only if the specified length is greater than that of the original array. Parameters:
original
 the array to be copiednewLength
 the length of the copy to be returned Returns:
 a copy of the original array, truncated or padded with null characters to obtain the specified length
 Throws:
NegativeArraySizeException
 ifnewLength
is negativeNullPointerException
 iforiginal
is null Since:
 1.6

copyOf
public static float[] copyOf(float[] original, int newLength)
Copies the specified array, truncating or padding with zeros (if necessary) so the copy has the specified length. For all indices that are valid in both the original array and the copy, the two arrays will contain identical values. For any indices that are valid in the copy but not the original, the copy will contain0f
. Such indices will exist if and only if the specified length is greater than that of the original array. Parameters:
original
 the array to be copiednewLength
 the length of the copy to be returned Returns:
 a copy of the original array, truncated or padded with zeros to obtain the specified length
 Throws:
NegativeArraySizeException
 ifnewLength
is negativeNullPointerException
 iforiginal
is null Since:
 1.6

copyOf
public static double[] copyOf(double[] original, int newLength)
Copies the specified array, truncating or padding with zeros (if necessary) so the copy has the specified length. For all indices that are valid in both the original array and the copy, the two arrays will contain identical values. For any indices that are valid in the copy but not the original, the copy will contain0d
. Such indices will exist if and only if the specified length is greater than that of the original array. Parameters:
original
 the array to be copiednewLength
 the length of the copy to be returned Returns:
 a copy of the original array, truncated or padded with zeros to obtain the specified length
 Throws:
NegativeArraySizeException
 ifnewLength
is negativeNullPointerException
 iforiginal
is null Since:
 1.6

copyOf
public static boolean[] copyOf(boolean[] original, int newLength)
Copies the specified array, truncating or padding withfalse
(if necessary) so the copy has the specified length. For all indices that are valid in both the original array and the copy, the two arrays will contain identical values. For any indices that are valid in the copy but not the original, the copy will containfalse
. Such indices will exist if and only if the specified length is greater than that of the original array. Parameters:
original
 the array to be copiednewLength
 the length of the copy to be returned Returns:
 a copy of the original array, truncated or padded with false elements to obtain the specified length
 Throws:
NegativeArraySizeException
 ifnewLength
is negativeNullPointerException
 iforiginal
is null Since:
 1.6

copyOfRange
public static <T> T[] copyOfRange(T[] original, int from, int to)
Copies the specified range of the specified array into a new array. The initial index of the range (from
) must lie between zero andoriginal.length
, inclusive. The value atoriginal[from]
is placed into the initial element of the copy (unlessfrom == original.length
orfrom == to
). Values from subsequent elements in the original array are placed into subsequent elements in the copy. The final index of the range (to
), which must be greater than or equal tofrom
, may be greater thanoriginal.length
, in which casenull
is placed in all elements of the copy whose index is greater than or equal tooriginal.length  from
. The length of the returned array will beto  from
.The resulting array is of exactly the same class as the original array.
 Type Parameters:
T
 the class of the objects in the array Parameters:
original
 the array from which a range is to be copiedfrom
 the initial index of the range to be copied, inclusiveto
 the final index of the range to be copied, exclusive. (This index may lie outside the array.) Returns:
 a new array containing the specified range from the original array, truncated or padded with nulls to obtain the required length
 Throws:
ArrayIndexOutOfBoundsException
 iffrom < 0
orfrom > original.length
IllegalArgumentException
 iffrom > to
NullPointerException
 iforiginal
is null Since:
 1.6

copyOfRange
public static <T,U> T[] copyOfRange(U[] original, int from, int to, Class<? extends T[]> newType)
Copies the specified range of the specified array into a new array. The initial index of the range (from
) must lie between zero andoriginal.length
, inclusive. The value atoriginal[from]
is placed into the initial element of the copy (unlessfrom == original.length
orfrom == to
). Values from subsequent elements in the original array are placed into subsequent elements in the copy. The final index of the range (to
), which must be greater than or equal tofrom
, may be greater thanoriginal.length
, in which casenull
is placed in all elements of the copy whose index is greater than or equal tooriginal.length  from
. The length of the returned array will beto  from
. The resulting array is of the classnewType
. Type Parameters:
U
 the class of the objects in the original arrayT
 the class of the objects in the returned array Parameters:
original
 the array from which a range is to be copiedfrom
 the initial index of the range to be copied, inclusiveto
 the final index of the range to be copied, exclusive. (This index may lie outside the array.)newType
 the class of the copy to be returned Returns:
 a new array containing the specified range from the original array, truncated or padded with nulls to obtain the required length
 Throws:
ArrayIndexOutOfBoundsException
 iffrom < 0
orfrom > original.length
IllegalArgumentException
 iffrom > to
NullPointerException
 iforiginal
is nullArrayStoreException
 if an element copied fromoriginal
is not of a runtime type that can be stored in an array of classnewType
. Since:
 1.6

copyOfRange
public static byte[] copyOfRange(byte[] original, int from, int to)
Copies the specified range of the specified array into a new array. The initial index of the range (from
) must lie between zero andoriginal.length
, inclusive. The value atoriginal[from]
is placed into the initial element of the copy (unlessfrom == original.length
orfrom == to
). Values from subsequent elements in the original array are placed into subsequent elements in the copy. The final index of the range (to
), which must be greater than or equal tofrom
, may be greater thanoriginal.length
, in which case(byte)0
is placed in all elements of the copy whose index is greater than or equal tooriginal.length  from
. The length of the returned array will beto  from
. Parameters:
original
 the array from which a range is to be copiedfrom
 the initial index of the range to be copied, inclusiveto
 the final index of the range to be copied, exclusive. (This index may lie outside the array.) Returns:
 a new array containing the specified range from the original array, truncated or padded with zeros to obtain the required length
 Throws:
ArrayIndexOutOfBoundsException
 iffrom < 0
orfrom > original.length
IllegalArgumentException
 iffrom > to
NullPointerException
 iforiginal
is null Since:
 1.6

copyOfRange
public static short[] copyOfRange(short[] original, int from, int to)
Copies the specified range of the specified array into a new array. The initial index of the range (from
) must lie between zero andoriginal.length
, inclusive. The value atoriginal[from]
is placed into the initial element of the copy (unlessfrom == original.length
orfrom == to
). Values from subsequent elements in the original array are placed into subsequent elements in the copy. The final index of the range (to
), which must be greater than or equal tofrom
, may be greater thanoriginal.length
, in which case(short)0
is placed in all elements of the copy whose index is greater than or equal tooriginal.length  from
. The length of the returned array will beto  from
. Parameters:
original
 the array from which a range is to be copiedfrom
 the initial index of the range to be copied, inclusiveto
 the final index of the range to be copied, exclusive. (This index may lie outside the array.) Returns:
 a new array containing the specified range from the original array, truncated or padded with zeros to obtain the required length
 Throws:
ArrayIndexOutOfBoundsException
 iffrom < 0
orfrom > original.length
IllegalArgumentException
 iffrom > to
NullPointerException
 iforiginal
is null Since:
 1.6

copyOfRange
public static int[] copyOfRange(int[] original, int from, int to)
Copies the specified range of the specified array into a new array. The initial index of the range (from
) must lie between zero andoriginal.length
, inclusive. The value atoriginal[from]
is placed into the initial element of the copy (unlessfrom == original.length
orfrom == to
). Values from subsequent elements in the original array are placed into subsequent elements in the copy. The final index of the range (to
), which must be greater than or equal tofrom
, may be greater thanoriginal.length
, in which case0
is placed in all elements of the copy whose index is greater than or equal tooriginal.length  from
. The length of the returned array will beto  from
. Parameters:
original
 the array from which a range is to be copiedfrom
 the initial index of the range to be copied, inclusiveto
 the final index of the range to be copied, exclusive. (This index may lie outside the array.) Returns:
 a new array containing the specified range from the original array, truncated or padded with zeros to obtain the required length
 Throws:
ArrayIndexOutOfBoundsException
 iffrom < 0
orfrom > original.length
IllegalArgumentException
 iffrom > to
NullPointerException
 iforiginal
is null Since:
 1.6

copyOfRange
public static long[] copyOfRange(long[] original, int from, int to)
Copies the specified range of the specified array into a new array. The initial index of the range (from
) must lie between zero andoriginal.length
, inclusive. The value atoriginal[from]
is placed into the initial element of the copy (unlessfrom == original.length
orfrom == to
). Values from subsequent elements in the original array are placed into subsequent elements in the copy. The final index of the range (to
), which must be greater than or equal tofrom
, may be greater thanoriginal.length
, in which case0L
is placed in all elements of the copy whose index is greater than or equal tooriginal.length  from
. The length of the returned array will beto  from
. Parameters:
original
 the array from which a range is to be copiedfrom
 the initial index of the range to be copied, inclusiveto
 the final index of the range to be copied, exclusive. (This index may lie outside the array.) Returns:
 a new array containing the specified range from the original array, truncated or padded with zeros to obtain the required length
 Throws:
ArrayIndexOutOfBoundsException
 iffrom < 0
orfrom > original.length
IllegalArgumentException
 iffrom > to
NullPointerException
 iforiginal
is null Since:
 1.6

copyOfRange
public static char[] copyOfRange(char[] original, int from, int to)
Copies the specified range of the specified array into a new array. The initial index of the range (from
) must lie between zero andoriginal.length
, inclusive. The value atoriginal[from]
is placed into the initial element of the copy (unlessfrom == original.length
orfrom == to
). Values from subsequent elements in the original array are placed into subsequent elements in the copy. The final index of the range (to
), which must be greater than or equal tofrom
, may be greater thanoriginal.length
, in which case'\\u000'
is placed in all elements of the copy whose index is greater than or equal tooriginal.length  from
. The length of the returned array will beto  from
. Parameters:
original
 the array from which a range is to be copiedfrom
 the initial index of the range to be copied, inclusiveto
 the final index of the range to be copied, exclusive. (This index may lie outside the array.) Returns:
 a new array containing the specified range from the original array, truncated or padded with null characters to obtain the required length
 Throws:
ArrayIndexOutOfBoundsException
 iffrom < 0
orfrom > original.length
IllegalArgumentException
 iffrom > to
NullPointerException
 iforiginal
is null Since:
 1.6

copyOfRange
public static float[] copyOfRange(float[] original, int from, int to)
Copies the specified range of the specified array into a new array. The initial index of the range (from
) must lie between zero andoriginal.length
, inclusive. The value atoriginal[from]
is placed into the initial element of the copy (unlessfrom == original.length
orfrom == to
). Values from subsequent elements in the original array are placed into subsequent elements in the copy. The final index of the range (to
), which must be greater than or equal tofrom
, may be greater thanoriginal.length
, in which case0f
is placed in all elements of the copy whose index is greater than or equal tooriginal.length  from
. The length of the returned array will beto  from
. Parameters:
original
 the array from which a range is to be copiedfrom
 the initial index of the range to be copied, inclusiveto
 the final index of the range to be copied, exclusive. (This index may lie outside the array.) Returns:
 a new array containing the specified range from the original array, truncated or padded with zeros to obtain the required length
 Throws:
ArrayIndexOutOfBoundsException
 iffrom < 0
orfrom > original.length
IllegalArgumentException
 iffrom > to
NullPointerException
 iforiginal
is null Since:
 1.6

copyOfRange
public static double[] copyOfRange(double[] original, int from, int to)
Copies the specified range of the specified array into a new array. The initial index of the range (from
) must lie between zero andoriginal.length
, inclusive. The value atoriginal[from]
is placed into the initial element of the copy (unlessfrom == original.length
orfrom == to
). Values from subsequent elements in the original array are placed into subsequent elements in the copy. The final index of the range (to
), which must be greater than or equal tofrom
, may be greater thanoriginal.length
, in which case0d
is placed in all elements of the copy whose index is greater than or equal tooriginal.length  from
. The length of the returned array will beto  from
. Parameters:
original
 the array from which a range is to be copiedfrom
 the initial index of the range to be copied, inclusiveto
 the final index of the range to be copied, exclusive. (This index may lie outside the array.) Returns:
 a new array containing the specified range from the original array, truncated or padded with zeros to obtain the required length
 Throws:
ArrayIndexOutOfBoundsException
 iffrom < 0
orfrom > original.length
IllegalArgumentException
 iffrom > to
NullPointerException
 iforiginal
is null Since:
 1.6

copyOfRange
public static boolean[] copyOfRange(boolean[] original, int from, int to)
Copies the specified range of the specified array into a new array. The initial index of the range (from
) must lie between zero andoriginal.length
, inclusive. The value atoriginal[from]
is placed into the initial element of the copy (unlessfrom == original.length
orfrom == to
). Values from subsequent elements in the original array are placed into subsequent elements in the copy. The final index of the range (to
), which must be greater than or equal tofrom
, may be greater thanoriginal.length
, in which casefalse
is placed in all elements of the copy whose index is greater than or equal tooriginal.length  from
. The length of the returned array will beto  from
. Parameters:
original
 the array from which a range is to be copiedfrom
 the initial index of the range to be copied, inclusiveto
 the final index of the range to be copied, exclusive. (This index may lie outside the array.) Returns:
 a new array containing the specified range from the original array, truncated or padded with false elements to obtain the required length
 Throws:
ArrayIndexOutOfBoundsException
 iffrom < 0
orfrom > original.length
IllegalArgumentException
 iffrom > to
NullPointerException
 iforiginal
is null Since:
 1.6

asList
@SafeVarargs public static <T> List<T> asList(T... a)
Returns a fixedsize list backed by the specified array. (Changes to the returned list "write through" to the array.) This method acts as bridge between arraybased and collectionbased APIs, in combination withCollection.toArray()
. The returned list is serializable and implementsRandomAccess
.This method also provides a convenient way to create a fixedsize list initialized to contain several elements:
List<String> stooges = Arrays.asList("Larry", "Moe", "Curly");
 Type Parameters:
T
 the class of the objects in the array Parameters:
a
 the array by which the list will be backed Returns:
 a list view of the specified array

hashCode
public static int hashCode(long[] a)
Returns a hash code based on the contents of the specified array. For any twolong
arraysa
andb
such thatArrays.equals(a, b)
, it is also the case thatArrays.hashCode(a) == Arrays.hashCode(b)
.The value returned by this method is the same value that would be obtained by invoking the
hashCode
method on aList
containing a sequence ofLong
instances representing the elements ofa
in the same order. Ifa
isnull
, this method returns 0. Parameters:
a
 the array whose hash value to compute Returns:
 a contentbased hash code for
a
 Since:
 1.5

hashCode
public static int hashCode(int[] a)
Returns a hash code based on the contents of the specified array. For any two nonnullint
arraysa
andb
such thatArrays.equals(a, b)
, it is also the case thatArrays.hashCode(a) == Arrays.hashCode(b)
.The value returned by this method is the same value that would be obtained by invoking the
hashCode
method on aList
containing a sequence ofInteger
instances representing the elements ofa
in the same order. Ifa
isnull
, this method returns 0. Parameters:
a
 the array whose hash value to compute Returns:
 a contentbased hash code for
a
 Since:
 1.5

hashCode
public static int hashCode(short[] a)
Returns a hash code based on the contents of the specified array. For any twoshort
arraysa
andb
such thatArrays.equals(a, b)
, it is also the case thatArrays.hashCode(a) == Arrays.hashCode(b)
.The value returned by this method is the same value that would be obtained by invoking the
hashCode
method on aList
containing a sequence ofShort
instances representing the elements ofa
in the same order. Ifa
isnull
, this method returns 0. Parameters:
a
 the array whose hash value to compute Returns:
 a contentbased hash code for
a
 Since:
 1.5

hashCode
public static int hashCode(char[] a)
Returns a hash code based on the contents of the specified array. For any twochar
arraysa
andb
such thatArrays.equals(a, b)
, it is also the case thatArrays.hashCode(a) == Arrays.hashCode(b)
.The value returned by this method is the same value that would be obtained by invoking the
hashCode
method on aList
containing a sequence ofCharacter
instances representing the elements ofa
in the same order. Ifa
isnull
, this method returns 0. Parameters:
a
 the array whose hash value to compute Returns:
 a contentbased hash code for
a
 Since:
 1.5

hashCode
public static int hashCode(byte[] a)
Returns a hash code based on the contents of the specified array. For any twobyte
arraysa
andb
such thatArrays.equals(a, b)
, it is also the case thatArrays.hashCode(a) == Arrays.hashCode(b)
.The value returned by this method is the same value that would be obtained by invoking the
hashCode
method on aList
containing a sequence ofByte
instances representing the elements ofa
in the same order. Ifa
isnull
, this method returns 0. Parameters:
a
 the array whose hash value to compute Returns:
 a contentbased hash code for
a
 Since:
 1.5

hashCode
public static int hashCode(boolean[] a)
Returns a hash code based on the contents of the specified array. For any twoboolean
arraysa
andb
such thatArrays.equals(a, b)
, it is also the case thatArrays.hashCode(a) == Arrays.hashCode(b)
.The value returned by this method is the same value that would be obtained by invoking the
hashCode
method on aList
containing a sequence ofBoolean
instances representing the elements ofa
in the same order. Ifa
isnull
, this method returns 0. Parameters:
a
 the array whose hash value to compute Returns:
 a contentbased hash code for
a
 Since:
 1.5

hashCode
public static int hashCode(float[] a)
Returns a hash code based on the contents of the specified array. For any twofloat
arraysa
andb
such thatArrays.equals(a, b)
, it is also the case thatArrays.hashCode(a) == Arrays.hashCode(b)
.The value returned by this method is the same value that would be obtained by invoking the
hashCode
method on aList
containing a sequence ofFloat
instances representing the elements ofa
in the same order. Ifa
isnull
, this method returns 0. Parameters:
a
 the array whose hash value to compute Returns:
 a contentbased hash code for
a
 Since:
 1.5

hashCode
public static int hashCode(double[] a)
Returns a hash code based on the contents of the specified array. For any twodouble
arraysa
andb
such thatArrays.equals(a, b)
, it is also the case thatArrays.hashCode(a) == Arrays.hashCode(b)
.The value returned by this method is the same value that would be obtained by invoking the
hashCode
method on aList
containing a sequence ofDouble
instances representing the elements ofa
in the same order. Ifa
isnull
, this method returns 0. Parameters:
a
 the array whose hash value to compute Returns:
 a contentbased hash code for
a
 Since:
 1.5

hashCode
public static int hashCode(Object[] a)
Returns a hash code based on the contents of the specified array. If the array contains other arrays as elements, the hash code is based on their identities rather than their contents. It is therefore acceptable to invoke this method on an array that contains itself as an element, either directly or indirectly through one or more levels of arrays.For any two arrays
a
andb
such thatArrays.equals(a, b)
, it is also the case thatArrays.hashCode(a) == Arrays.hashCode(b)
.The value returned by this method is equal to the value that would be returned by
Arrays.asList(a).hashCode()
, unlessa
isnull
, in which case0
is returned. Parameters:
a
 the array whose contentbased hash code to compute Returns:
 a contentbased hash code for
a
 Since:
 1.5
 See Also:
deepHashCode(Object[])

deepHashCode
public static int deepHashCode(Object[] a)
Returns a hash code based on the "deep contents" of the specified array. If the array contains other arrays as elements, the hash code is based on their contents and so on, ad infinitum. It is therefore unacceptable to invoke this method on an array that contains itself as an element, either directly or indirectly through one or more levels of arrays. The behavior of such an invocation is undefined.For any two arrays
a
andb
such thatArrays.deepEquals(a, b)
, it is also the case thatArrays.deepHashCode(a) == Arrays.deepHashCode(b)
.The computation of the value returned by this method is similar to that of the value returned by
List.hashCode()
on a list containing the same elements asa
in the same order, with one difference: If an elemente
ofa
is itself an array, its hash code is computed not by callinge.hashCode()
, but as by calling the appropriate overloading ofArrays.hashCode(e)
ife
is an array of a primitive type, or as by callingArrays.deepHashCode(e)
recursively ife
is an array of a reference type. Ifa
isnull
, this method returns 0. Parameters:
a
 the array whose deepcontentbased hash code to compute Returns:
 a deepcontentbased hash code for
a
 Since:
 1.5
 See Also:
hashCode(Object[])

deepEquals
public static boolean deepEquals(Object[] a1, Object[] a2)
Returnstrue
if the two specified arrays are deeply equal to one another. Unlike theequals(Object[],Object[])
method, this method is appropriate for use with nested arrays of arbitrary depth.Two array references are considered deeply equal if both are
null
, or if they refer to arrays that contain the same number of elements and all corresponding pairs of elements in the two arrays are deeply equal.Two possibly
null
elementse1
ande2
are deeply equal if any of the following conditions hold:
e1
ande2
are both arrays of object reference types, andArrays.deepEquals(e1, e2) would return true

e1
ande2
are arrays of the same primitive type, and the appropriate overloading ofArrays.equals(e1, e2)
would return true. 
e1 == e2

e1.equals(e2)
would return true.
null
elements at any depth.If either of the specified arrays contain themselves as elements either directly or indirectly through one or more levels of arrays, the behavior of this method is undefined.
 Parameters:
a1
 one array to be tested for equalitya2
 the other array to be tested for equality Returns:
true
if the two arrays are equal Since:
 1.5
 See Also:
equals(Object[],Object[])
,Objects.deepEquals(Object, Object)


toString
public static String toString(long[] a)
Returns a string representation of the contents of the specified array. The string representation consists of a list of the array's elements, enclosed in square brackets ("[]"
). Adjacent elements are separated by the characters", "
(a comma followed by a space). Elements are converted to strings as byString.valueOf(long)
. Returns"null"
ifa
isnull
. Parameters:
a
 the array whose string representation to return Returns:
 a string representation of
a
 Since:
 1.5

toString
public static String toString(int[] a)
Returns a string representation of the contents of the specified array. The string representation consists of a list of the array's elements, enclosed in square brackets ("[]"
). Adjacent elements are separated by the characters", "
(a comma followed by a space). Elements are converted to strings as byString.valueOf(int)
. Returns"null"
ifa
isnull
. Parameters:
a
 the array whose string representation to return Returns:
 a string representation of
a
 Since:
 1.5

toString
public static String toString(short[] a)
Returns a string representation of the contents of the specified array. The string representation consists of a list of the array's elements, enclosed in square brackets ("[]"
). Adjacent elements are separated by the characters", "
(a comma followed by a space). Elements are converted to strings as byString.valueOf(short)
. Returns"null"
ifa
isnull
. Parameters:
a
 the array whose string representation to return Returns:
 a string representation of
a
 Since:
 1.5

toString
public static String toString(char[] a)
Returns a string representation of the contents of the specified array. The string representation consists of a list of the array's elements, enclosed in square brackets ("[]"
). Adjacent elements are separated by the characters", "
(a comma followed by a space). Elements are converted to strings as byString.valueOf(char)
. Returns"null"
ifa
isnull
. Parameters:
a
 the array whose string representation to return Returns:
 a string representation of
a
 Since:
 1.5

toString
public static String toString(byte[] a)
Returns a string representation of the contents of the specified array. The string representation consists of a list of the array's elements, enclosed in square brackets ("[]"
). Adjacent elements are separated by the characters", "
(a comma followed by a space). Elements are converted to strings as byString.valueOf(byte)
. Returns"null"
ifa
isnull
. Parameters:
a
 the array whose string representation to return Returns:
 a string representation of
a
 Since:
 1.5

toString
public static String toString(boolean[] a)
Returns a string representation of the contents of the specified array. The string representation consists of a list of the array's elements, enclosed in square brackets ("[]"
). Adjacent elements are separated by the characters", "
(a comma followed by a space). Elements are converted to strings as byString.valueOf(boolean)
. Returns"null"
ifa
isnull
. Parameters:
a
 the array whose string representation to return Returns:
 a string representation of
a
 Since:
 1.5

toString
public static String toString(float[] a)
Returns a string representation of the contents of the specified array. The string representation consists of a list of the array's elements, enclosed in square brackets ("[]"
). Adjacent elements are separated by the characters", "
(a comma followed by a space). Elements are converted to strings as byString.valueOf(float)
. Returns"null"
ifa
isnull
. Parameters:
a
 the array whose string representation to return Returns:
 a string representation of
a
 Since:
 1.5

toString
public static String toString(double[] a)
Returns a string representation of the contents of the specified array. The string representation consists of a list of the array's elements, enclosed in square brackets ("[]"
). Adjacent elements are separated by the characters", "
(a comma followed by a space). Elements are converted to strings as byString.valueOf(double)
. Returns"null"
ifa
isnull
. Parameters:
a
 the array whose string representation to return Returns:
 a string representation of
a
 Since:
 1.5

toString
public static String toString(Object[] a)
Returns a string representation of the contents of the specified array. If the array contains other arrays as elements, they are converted to strings by theObject.toString()
method inherited fromObject
, which describes their identities rather than their contents.The value returned by this method is equal to the value that would be returned by
Arrays.asList(a).toString()
, unlessa
isnull
, in which case"null"
is returned. Parameters:
a
 the array whose string representation to return Returns:
 a string representation of
a
 Since:
 1.5
 See Also:
deepToString(Object[])

deepToString
public static String deepToString(Object[] a)
Returns a string representation of the "deep contents" of the specified array. If the array contains other arrays as elements, the string representation contains their contents and so on. This method is designed for converting multidimensional arrays to strings.The string representation consists of a list of the array's elements, enclosed in square brackets (
"[]"
). Adjacent elements are separated by the characters", "
(a comma followed by a space). Elements are converted to strings as byString.valueOf(Object)
, unless they are themselves arrays.If an element
e
is an array of a primitive type, it is converted to a string as by invoking the appropriate overloading ofArrays.toString(e)
. If an elemente
is an array of a reference type, it is converted to a string as by invoking this method recursively.To avoid infinite recursion, if the specified array contains itself as an element, or contains an indirect reference to itself through one or more levels of arrays, the selfreference is converted to the string
"[...]"
. For example, an array containing only a reference to itself would be rendered as"[[...]]"
.This method returns
"null"
if the specified array isnull
. Parameters:
a
 the array whose string representation to return Returns:
 a string representation of
a
 Since:
 1.5
 See Also:
toString(Object[])

setAll
public static <T> void setAll(T[] array, IntFunction<? extends T> generator)
Set all elements of the specified array, using the provided generator function to compute each element.If the generator function throws an exception, it is relayed to the caller and the array is left in an indeterminate state.
 API Note:
 Setting a subrange of an array, using a generator function to compute
each element, can be written as follows:
IntStream.range(startInclusive, endExclusive) .forEach(i > array[i] = generator.apply(i));
 Type Parameters:
T
 type of elements of the array Parameters:
array
 array to be initializedgenerator
 a function accepting an index and producing the desired value for that position Throws:
NullPointerException
 if the generator is null Since:
 1.8

parallelSetAll
public static <T> void parallelSetAll(T[] array, IntFunction<? extends T> generator)
Set all elements of the specified array, in parallel, using the provided generator function to compute each element.If the generator function throws an exception, an unchecked exception is thrown from
parallelSetAll
and the array is left in an indeterminate state. API Note:
 Setting a subrange of an array, in parallel, using a generator function
to compute each element, can be written as follows:
IntStream.range(startInclusive, endExclusive) .parallel() .forEach(i > array[i] = generator.apply(i));
 Type Parameters:
T
 type of elements of the array Parameters:
array
 array to be initializedgenerator
 a function accepting an index and producing the desired value for that position Throws:
NullPointerException
 if the generator is null Since:
 1.8

setAll
public static void setAll(int[] array, IntUnaryOperator generator)
Set all elements of the specified array, using the provided generator function to compute each element.If the generator function throws an exception, it is relayed to the caller and the array is left in an indeterminate state.
 API Note:
 Setting a subrange of an array, using a generator function to compute
each element, can be written as follows:
IntStream.range(startInclusive, endExclusive) .forEach(i > array[i] = generator.applyAsInt(i));
 Parameters:
array
 array to be initializedgenerator
 a function accepting an index and producing the desired value for that position Throws:
NullPointerException
 if the generator is null Since:
 1.8

parallelSetAll
public static void parallelSetAll(int[] array, IntUnaryOperator generator)
Set all elements of the specified array, in parallel, using the provided generator function to compute each element.If the generator function throws an exception, an unchecked exception is thrown from
parallelSetAll
and the array is left in an indeterminate state. API Note:
 Setting a subrange of an array, in parallel, using a generator function
to compute each element, can be written as follows:
IntStream.range(startInclusive, endExclusive) .parallel() .forEach(i > array[i] = generator.applyAsInt(i));
 Parameters:
array
 array to be initializedgenerator
 a function accepting an index and producing the desired value for that position Throws:
NullPointerException
 if the generator is null Since:
 1.8

setAll
public static void setAll(long[] array, IntToLongFunction generator)
Set all elements of the specified array, using the provided generator function to compute each element.If the generator function throws an exception, it is relayed to the caller and the array is left in an indeterminate state.
 API Note:
 Setting a subrange of an array, using a generator function to compute
each element, can be written as follows:
IntStream.range(startInclusive, endExclusive) .forEach(i > array[i] = generator.applyAsLong(i));
 Parameters:
array
 array to be initializedgenerator
 a function accepting an index and producing the desired value for that position Throws:
NullPointerException
 if the generator is null Since:
 1.8

parallelSetAll
public static void parallelSetAll(long[] array, IntToLongFunction generator)
Set all elements of the specified array, in parallel, using the provided generator function to compute each element.If the generator function throws an exception, an unchecked exception is thrown from
parallelSetAll
and the array is left in an indeterminate state. API Note:
 Setting a subrange of an array, in parallel, using a generator function
to compute each element, can be written as follows:
IntStream.range(startInclusive, endExclusive) .parallel() .forEach(i > array[i] = generator.applyAsLong(i));
 Parameters:
array
 array to be initializedgenerator
 a function accepting an index and producing the desired value for that position Throws:
NullPointerException
 if the generator is null Since:
 1.8

setAll
public static void setAll(double[] array, IntToDoubleFunction generator)
Set all elements of the specified array, using the provided generator function to compute each element.If the generator function throws an exception, it is relayed to the caller and the array is left in an indeterminate state.
 API Note:
 Setting a subrange of an array, using a generator function to compute
each element, can be written as follows:
IntStream.range(startInclusive, endExclusive) .forEach(i > array[i] = generator.applyAsDouble(i));
 Parameters:
array
 array to be initializedgenerator
 a function accepting an index and producing the desired value for that position Throws:
NullPointerException
 if the generator is null Since:
 1.8

parallelSetAll
public static void parallelSetAll(double[] array, IntToDoubleFunction generator)
Set all elements of the specified array, in parallel, using the provided generator function to compute each element.If the generator function throws an exception, an unchecked exception is thrown from
parallelSetAll
and the array is left in an indeterminate state. API Note:
 Setting a subrange of an array, in parallel, using a generator function
to compute each element, can be written as follows:
IntStream.range(startInclusive, endExclusive) .parallel() .forEach(i > array[i] = generator.applyAsDouble(i));
 Parameters:
array
 array to be initializedgenerator
 a function accepting an index and producing the desired value for that position Throws:
NullPointerException
 if the generator is null Since:
 1.8

spliterator
public static <T> Spliterator<T> spliterator(T[] array)
Returns aSpliterator
covering all of the specified array.The spliterator reports
Spliterator.SIZED
,Spliterator.SUBSIZED
,Spliterator.ORDERED
, andSpliterator.IMMUTABLE
. Type Parameters:
T
 type of elements Parameters:
array
 the array, assumed to be unmodified during use Returns:
 a spliterator for the array elements
 Since:
 1.8

spliterator
public static <T> Spliterator<T> spliterator(T[] array, int startInclusive, int endExclusive)
Returns aSpliterator
covering the specified range of the specified array.The spliterator reports
Spliterator.SIZED
,Spliterator.SUBSIZED
,Spliterator.ORDERED
, andSpliterator.IMMUTABLE
. Type Parameters:
T
 type of elements Parameters:
array
 the array, assumed to be unmodified during usestartInclusive
 the first index to cover, inclusiveendExclusive
 index immediately past the last index to cover Returns:
 a spliterator for the array elements
 Throws:
ArrayIndexOutOfBoundsException
 ifstartInclusive
is negative,endExclusive
is less thanstartInclusive
, orendExclusive
is greater than the array size Since:
 1.8

spliterator
public static Spliterator.OfInt spliterator(int[] array)
Returns aSpliterator.OfInt
covering all of the specified array.The spliterator reports
Spliterator.SIZED
,Spliterator.SUBSIZED
,Spliterator.ORDERED
, andSpliterator.IMMUTABLE
. Parameters:
array
 the array, assumed to be unmodified during use Returns:
 a spliterator for the array elements
 Since:
 1.8

spliterator
public static Spliterator.OfInt spliterator(int[] array, int startInclusive, int endExclusive)
Returns aSpliterator.OfInt
covering the specified range of the specified array.The spliterator reports
Spliterator.SIZED
,Spliterator.SUBSIZED
,Spliterator.ORDERED
, andSpliterator.IMMUTABLE
. Parameters:
array
 the array, assumed to be unmodified during usestartInclusive
 the first index to cover, inclusiveendExclusive
 index immediately past the last index to cover Returns:
 a spliterator for the array elements
 Throws:
ArrayIndexOutOfBoundsException
 ifstartInclusive
is negative,endExclusive
is less thanstartInclusive
, orendExclusive
is greater than the array size Since:
 1.8

spliterator
public static Spliterator.OfLong spliterator(long[] array)
Returns aSpliterator.OfLong
covering all of the specified array.The spliterator reports
Spliterator.SIZED
,Spliterator.SUBSIZED
,Spliterator.ORDERED
, andSpliterator.IMMUTABLE
. Parameters:
array
 the array, assumed to be unmodified during use Returns:
 the spliterator for the array elements
 Since:
 1.8

spliterator
public static Spliterator.OfLong spliterator(long[] array, int startInclusive, int endExclusive)
Returns aSpliterator.OfLong
covering the specified range of the specified array.The spliterator reports
Spliterator.SIZED
,Spliterator.SUBSIZED
,Spliterator.ORDERED
, andSpliterator.IMMUTABLE
. Parameters:
array
 the array, assumed to be unmodified during usestartInclusive
 the first index to cover, inclusiveendExclusive
 index immediately past the last index to cover Returns:
 a spliterator for the array elements
 Throws:
ArrayIndexOutOfBoundsException
 ifstartInclusive
is negative,endExclusive
is less thanstartInclusive
, orendExclusive
is greater than the array size Since:
 1.8

spliterator
public static Spliterator.OfDouble spliterator(double[] array)
Returns aSpliterator.OfDouble
covering all of the specified array.The spliterator reports
Spliterator.SIZED
,Spliterator.SUBSIZED
,Spliterator.ORDERED
, andSpliterator.IMMUTABLE
. Parameters:
array
 the array, assumed to be unmodified during use Returns:
 a spliterator for the array elements
 Since:
 1.8

spliterator
public static Spliterator.OfDouble spliterator(double[] array, int startInclusive, int endExclusive)
Returns aSpliterator.OfDouble
covering the specified range of the specified array.The spliterator reports
Spliterator.SIZED
,Spliterator.SUBSIZED
,Spliterator.ORDERED
, andSpliterator.IMMUTABLE
. Parameters:
array
 the array, assumed to be unmodified during usestartInclusive
 the first index to cover, inclusiveendExclusive
 index immediately past the last index to cover Returns:
 a spliterator for the array elements
 Throws:
ArrayIndexOutOfBoundsException
 ifstartInclusive
is negative,endExclusive
is less thanstartInclusive
, orendExclusive
is greater than the array size Since:
 1.8

stream
public static <T> Stream<T> stream(T[] array)
Returns a sequentialStream
with the specified array as its source. Type Parameters:
T
 The type of the array elements Parameters:
array
 The array, assumed to be unmodified during use Returns:
 a
Stream
for the array  Since:
 1.8

stream
public static <T> Stream<T> stream(T[] array, int startInclusive, int endExclusive)
Returns a sequentialStream
with the specified range of the specified array as its source. Type Parameters:
T
 the type of the array elements Parameters:
array
 the array, assumed to be unmodified during usestartInclusive
 the first index to cover, inclusiveendExclusive
 index immediately past the last index to cover Returns:
 a
Stream
for the array range  Throws:
ArrayIndexOutOfBoundsException
 ifstartInclusive
is negative,endExclusive
is less thanstartInclusive
, orendExclusive
is greater than the array size Since:
 1.8

stream
public static IntStream stream(int[] array)
Returns a sequentialIntStream
with the specified array as its source. Parameters:
array
 the array, assumed to be unmodified during use Returns:
 an
IntStream
for the array  Since:
 1.8

stream
public static IntStream stream(int[] array, int startInclusive, int endExclusive)
Returns a sequentialIntStream
with the specified range of the specified array as its source. Parameters:
array
 the array, assumed to be unmodified during usestartInclusive
 the first index to cover, inclusiveendExclusive
 index immediately past the last index to cover Returns:
 an
IntStream
for the array range  Throws:
ArrayIndexOutOfBoundsException
 ifstartInclusive
is negative,endExclusive
is less thanstartInclusive
, orendExclusive
is greater than the array size Since:
 1.8

stream
public static LongStream stream(long[] array)
Returns a sequentialLongStream
with the specified array as its source. Parameters:
array
 the array, assumed to be unmodified during use Returns:
 a
LongStream
for the array  Since:
 1.8

stream
public static LongStream stream(long[] array, int startInclusive, int endExclusive)
Returns a sequentialLongStream
with the specified range of the specified array as its source. Parameters:
array
 the array, assumed to be unmodified during usestartInclusive
 the first index to cover, inclusiveendExclusive
 index immediately past the last index to cover Returns:
 a
LongStream
for the array range  Throws:
ArrayIndexOutOfBoundsException
 ifstartInclusive
is negative,endExclusive
is less thanstartInclusive
, orendExclusive
is greater than the array size Since:
 1.8

stream
public static DoubleStream stream(double[] array)
Returns a sequentialDoubleStream
with the specified array as its source. Parameters:
array
 the array, assumed to be unmodified during use Returns:
 a
DoubleStream
for the array  Since:
 1.8

stream
public static DoubleStream stream(double[] array, int startInclusive, int endExclusive)
Returns a sequentialDoubleStream
with the specified range of the specified array as its source. Parameters:
array
 the array, assumed to be unmodified during usestartInclusive
 the first index to cover, inclusiveendExclusive
 index immediately past the last index to cover Returns:
 a
DoubleStream
for the array range  Throws:
ArrayIndexOutOfBoundsException
 ifstartInclusive
is negative,endExclusive
is less thanstartInclusive
, orendExclusive
is greater than the array size Since:
 1.8

compare
public static int compare(boolean[] a, boolean[] b)
Compares twoboolean
arrays lexicographically.If the two arrays share a common prefix then the lexicographic comparison is the result of comparing two elements, as if by
Boolean.compare(boolean, boolean)
, at an index within the respective arrays that is the prefix length. Otherwise, one array is a proper prefix of the other and, lexicographic comparison is the result of comparing the two array lengths. (Seemismatch(boolean[], boolean[])
for the definition of a common and proper prefix.)A
null
array reference is considered lexicographically less than a nonnull
array reference. Twonull
array references are considered equal.The comparison is consistent with
equals
, more specifically the following holds for arraysa
andb
:Arrays.equals(a, b) == (Arrays.compare(a, b) == 0)
 API Note:
This method behaves as if (for non
null
array references):int i = Arrays.mismatch(a, b); if (i >= 0 && i < Math.min(a.length, b.length)) return Boolean.compare(a[i], b[i]); return a.length  b.length;
 Parameters:
a
 the first array to compareb
 the second array to compare Returns:
 the value
0
if the first and second array are equal and contain the same elements in the same order; a value less than0
if the first array is lexicographically less than the second array; and a value greater than0
if the first array is lexicographically greater than the second array  Since:
 9

compare
public static int compare(boolean[] a, int aFromIndex, int aToIndex, boolean[] b, int bFromIndex, int bToIndex)
Compares twoboolean
arrays lexicographically over the specified ranges.If the two arrays, over the specified ranges, share a common prefix then the lexicographic comparison is the result of comparing two elements, as if by
Boolean.compare(boolean, boolean)
, at a relative index within the respective arrays that is the length of the prefix. Otherwise, one array is a proper prefix of the other and, lexicographic comparison is the result of comparing the two range lengths. (Seemismatch(boolean[], int, int, boolean[], int, int)
for the definition of a common and proper prefix.)The comparison is consistent with
equals
, more specifically the following holds for arraysa
andb
with specified ranges [aFromIndex
,atoIndex
) and [bFromIndex
,btoIndex
) respectively:Arrays.equals(a, aFromIndex, aToIndex, b, bFromIndex, bToIndex) == (Arrays.compare(a, aFromIndex, aToIndex, b, bFromIndex, bToIndex) == 0)
 API Note:
This method behaves as if:
int i = Arrays.mismatch(a, aFromIndex, aToIndex, b, bFromIndex, bToIndex); if (i >= 0 && i < Math.min(aToIndex  aFromIndex, bToIndex  bFromIndex)) return Boolean.compare(a[aFromIndex + i], b[bFromIndex + i]); return (aToIndex  aFromIndex)  (bToIndex  bFromIndex);
 Parameters:
a
 the first array to compareaFromIndex
 the index (inclusive) of the first element in the first array to be comparedaToIndex
 the index (exclusive) of the last element in the first array to be comparedb
 the second array to comparebFromIndex
 the index (inclusive) of the first element in the second array to be comparedbToIndex
 the index (exclusive) of the last element in the second array to be compared Returns:
 the value
0
if, over the specified ranges, the first and second array are equal and contain the same elements in the same order; a value less than0
if, over the specified ranges, the first array is lexicographically less than the second array; and a value greater than0
if, over the specified ranges, the first array is lexicographically greater than the second array  Throws:
IllegalArgumentException
 ifaFromIndex > aToIndex
or ifbFromIndex > bToIndex
ArrayIndexOutOfBoundsException
 ifaFromIndex < 0 or aToIndex > a.length
or ifbFromIndex < 0 or bToIndex > b.length
NullPointerException
 if either array isnull
 Since:
 9

compare
public static int compare(byte[] a, byte[] b)
Compares twobyte
arrays lexicographically.If the two arrays share a common prefix then the lexicographic comparison is the result of comparing two elements, as if by
Byte.compare(byte, byte)
, at an index within the respective arrays that is the prefix length. Otherwise, one array is a proper prefix of the other and, lexicographic comparison is the result of comparing the two array lengths. (Seemismatch(byte[], byte[])
for the definition of a common and proper prefix.)A
null
array reference is considered lexicographically less than a nonnull
array reference. Twonull
array references are considered equal.The comparison is consistent with
equals
, more specifically the following holds for arraysa
andb
:Arrays.equals(a, b) == (Arrays.compare(a, b) == 0)
 API Note:
This method behaves as if (for non
null
array references):int i = Arrays.mismatch(a, b); if (i >= 0 && i < Math.min(a.length, b.length)) return Byte.compare(a[i], b[i]); return a.length  b.length;
 Parameters:
a
 the first array to compareb
 the second array to compare Returns:
 the value
0
if the first and second array are equal and contain the same elements in the same order; a value less than0
if the first array is lexicographically less than the second array; and a value greater than0
if the first array is lexicographically greater than the second array  Since:
 9

compare
public static int compare(byte[] a, int aFromIndex, int aToIndex, byte[] b, int bFromIndex, int bToIndex)
Compares twobyte
arrays lexicographically over the specified ranges.If the two arrays, over the specified ranges, share a common prefix then the lexicographic comparison is the result of comparing two elements, as if by
Byte.compare(byte, byte)
, at a relative index within the respective arrays that is the length of the prefix. Otherwise, one array is a proper prefix of the other and, lexicographic comparison is the result of comparing the two range lengths. (Seemismatch(byte[], int, int, byte[], int, int)
for the definition of a common and proper prefix.)The comparison is consistent with
equals
, more specifically the following holds for arraysa
andb
with specified ranges [aFromIndex
,atoIndex
) and [bFromIndex
,btoIndex
) respectively:Arrays.equals(a, aFromIndex, aToIndex, b, bFromIndex, bToIndex) == (Arrays.compare(a, aFromIndex, aToIndex, b, bFromIndex, bToIndex) == 0)
 API Note:
This method behaves as if:
int i = Arrays.mismatch(a, aFromIndex, aToIndex, b, bFromIndex, bToIndex); if (i >= 0 && i < Math.min(aToIndex  aFromIndex, bToIndex  bFromIndex)) return Byte.compare(a[aFromIndex + i], b[bFromIndex + i]); return (aToIndex  aFromIndex)  (bToIndex  bFromIndex);
 Parameters:
a
 the first array to compareaFromIndex
 the index (inclusive) of the first element in the first array to be comparedaToIndex
 the index (exclusive) of the last element in the first array to be comparedb
 the second array to comparebFromIndex
 the index (inclusive) of the first element in the second array to be comparedbToIndex
 the index (exclusive) of the last element in the second array to be compared Returns:
 the value
0
if, over the specified ranges, the first and second array are equal and contain the same elements in the same order; a value less than0
if, over the specified ranges, the first array is lexicographically less than the second array; and a value greater than0
if, over the specified ranges, the first array is lexicographically greater than the second array  Throws:
IllegalArgumentException
 ifaFromIndex > aToIndex
or ifbFromIndex > bToIndex
ArrayIndexOutOfBoundsException
 ifaFromIndex < 0 or aToIndex > a.length
or ifbFromIndex < 0 or bToIndex > b.length
NullPointerException
 if either array isnull
 Since:
 9

compareUnsigned
public static int compareUnsigned(byte[] a, byte[] b)
Compares twobyte
arrays lexicographically, numerically treating elements as unsigned.If the two arrays share a common prefix then the lexicographic comparison is the result of comparing two elements, as if by
Byte.compareUnsigned(byte, byte)
, at an index within the respective arrays that is the prefix length. Otherwise, one array is a proper prefix of the other and, lexicographic comparison is the result of comparing the two array lengths. (Seemismatch(byte[], byte[])
for the definition of a common and proper prefix.)A
null
array reference is considered lexicographically less than a nonnull
array reference. Twonull
array references are considered equal. API Note:
This method behaves as if (for non
null
array references):int i = Arrays.mismatch(a, b); if (i >= 0 && i < Math.min(a.length, b.length)) return Byte.compareUnsigned(a[i], b[i]); return a.length  b.length;
 Parameters:
a
 the first array to compareb
 the second array to compare Returns:
 the value
0
if the first and second array are equal and contain the same elements in the same order; a value less than0
if the first array is lexicographically less than the second array; and a value greater than0
if the first array is lexicographically greater than the second array  Since:
 9

compareUnsigned
public static int compareUnsigned(byte[] a, int aFromIndex, int aToIndex, byte[] b, int bFromIndex, int bToIndex)
Compares twobyte
arrays lexicographically over the specified ranges, numerically treating elements as unsigned.If the two arrays, over the specified ranges, share a common prefix then the lexicographic comparison is the result of comparing two elements, as if by
Byte.compareUnsigned(byte, byte)
, at a relative index within the respective arrays that is the length of the prefix. Otherwise, one array is a proper prefix of the other and, lexicographic comparison is the result of comparing the two range lengths. (Seemismatch(byte[], int, int, byte[], int, int)
for the definition of a common and proper prefix.) API Note:
This method behaves as if:
int i = Arrays.mismatch(a, aFromIndex, aToIndex, b, bFromIndex, bToIndex); if (i >= 0 && i < Math.min(aToIndex  aFromIndex, bToIndex  bFromIndex)) return Byte.compareUnsigned(a[aFromIndex + i], b[bFromIndex + i]); return (aToIndex  aFromIndex)  (bToIndex  bFromIndex);
 Parameters:
a
 the first array to compareaFromIndex
 the index (inclusive) of the first element in the first array to be comparedaToIndex
 the index (exclusive) of the last element in the first array to be comparedb
 the second array to comparebFromIndex
 the index (inclusive) of the first element in the second array to be comparedbToIndex
 the index (exclusive) of the last element in the second array to be compared Returns:
 the value
0
if, over the specified ranges, the first and second array are equal and contain the same elements in the same order; a value less than0
if, over the specified ranges, the first array is lexicographically less than the second array; and a value greater than0
if, over the specified ranges, the first array is lexicographically greater than the second array  Throws:
IllegalArgumentException
 ifaFromIndex > aToIndex
or ifbFromIndex > bToIndex
ArrayIndexOutOfBoundsException
 ifaFromIndex < 0 or aToIndex > a.length
or ifbFromIndex < 0 or bToIndex > b.length
NullPointerException
 if either array is null Since:
 9

compare
public static int compare(short[] a, short[] b)
Compares twoshort
arrays lexicographically.If the two arrays share a common prefix then the lexicographic comparison is the result of comparing two elements, as if by
Short.compare(short, short)
, at an index within the respective arrays that is the prefix length. Otherwise, one array is a proper prefix of the other and, lexicographic comparison is the result of comparing the two array lengths. (Seemismatch(short[], short[])
for the definition of a common and proper prefix.)A
null
array reference is considered lexicographically less than a nonnull
array reference. Twonull
array references are considered equal.The comparison is consistent with
equals
, more specifically the following holds for arraysa
andb
:Arrays.equals(a, b) == (Arrays.compare(a, b) == 0)
 API Note:
This method behaves as if (for non
null
array references):int i = Arrays.mismatch(a, b); if (i >= 0 && i < Math.min(a.length, b.length)) return Short.compare(a[i], b[i]); return a.length  b.length;
 Parameters:
a
 the first array to compareb
 the second array to compare Returns:
 the value
0
if the first and second array are equal and contain the same elements in the same order; a value less than0
if the first array is lexicographically less than the second array; and a value greater than0
if the first array is lexicographically greater than the second array  Since:
 9

compare
public static int compare(short[] a, int aFromIndex, int aToIndex, short[] b, int bFromIndex, int bToIndex)
Compares twoshort
arrays lexicographically over the specified ranges.If the two arrays, over the specified ranges, share a common prefix then the lexicographic comparison is the result of comparing two elements, as if by
Short.compare(short, short)
, at a relative index within the respective arrays that is the length of the prefix. Otherwise, one array is a proper prefix of the other and, lexicographic comparison is the result of comparing the two range lengths. (Seemismatch(short[], int, int, short[], int, int)
for the definition of a common and proper prefix.)The comparison is consistent with
equals
, more specifically the following holds for arraysa
andb
with specified ranges [aFromIndex
,atoIndex
) and [bFromIndex
,btoIndex
) respectively:Arrays.equals(a, aFromIndex, aToIndex, b, bFromIndex, bToIndex) == (Arrays.compare(a, aFromIndex, aToIndex, b, bFromIndex, bToIndex) == 0)
 API Note:
This method behaves as if:
int i = Arrays.mismatch(a, aFromIndex, aToIndex, b, bFromIndex, bToIndex); if (i >= 0 && i < Math.min(aToIndex  aFromIndex, bToIndex  bFromIndex)) return Short.compare(a[aFromIndex + i], b[bFromIndex + i]); return (aToIndex  aFromIndex)  (bToIndex  bFromIndex);
 Parameters:
a
 the first array to compareaFromIndex
 the index (inclusive) of the first element in the first array to be comparedaToIndex
 the index (exclusive) of the last element in the first array to be comparedb
 the second array to comparebFromIndex
 the index (inclusive) of the first element in the second array to be comparedbToIndex
 the index (exclusive) of the last element in the second array to be compared Returns:
 the value
0
if, over the specified ranges, the first and second array are equal and contain the same elements in the same order; a value less than0
if, over the specified ranges, the first array is lexicographically less than the second array; and a value greater than0
if, over the specified ranges, the first array is lexicographically greater than the second array  Throws:
IllegalArgumentException
 ifaFromIndex > aToIndex
or ifbFromIndex > bToIndex
ArrayIndexOutOfBoundsException
 ifaFromIndex < 0 or aToIndex > a.length
or ifbFromIndex < 0 or bToIndex > b.length
NullPointerException
 if either array isnull
 Since:
 9

compareUnsigned
public static int compareUnsigned(short[] a, short[] b)
Compares twoshort
arrays lexicographically, numerically treating elements as unsigned.If the two arrays share a common prefix then the lexicographic comparison is the result of comparing two elements, as if by
Short.compareUnsigned(short, short)
, at an index within the respective arrays that is the prefix length. Otherwise, one array is a proper prefix of the other and, lexicographic comparison is the result of comparing the two array lengths. (Seemismatch(short[], short[])
for the definition of a common and proper prefix.)A
null
array reference is considered lexicographically less than a nonnull
array reference. Twonull
array references are considered equal. API Note:
This method behaves as if (for non
null
array references):int i = Arrays.mismatch(a, b); if (i >= 0 && i < Math.min(a.length, b.length)) return Short.compareUnsigned(a[i], b[i]); return a.length  b.length;
 Parameters:
a
 the first array to compareb
 the second array to compare Returns:
 the value
0
if the first and second array are equal and contain the same elements in the same order; a value less than0
if the first array is lexicographically less than the second array; and a value greater than0
if the first array is lexicographically greater than the second array  Since:
 9

compareUnsigned
public static int compareUnsigned(short[] a, int aFromIndex, int aToIndex, short[] b, int bFromIndex, int bToIndex)
Compares twoshort
arrays lexicographically over the specified ranges, numerically treating elements as unsigned.If the two arrays, over the specified ranges, share a common prefix then the lexicographic comparison is the result of comparing two elements, as if by
Short.compareUnsigned(short, short)
, at a relative index within the respective arrays that is the length of the prefix. Otherwise, one array is a proper prefix of the other and, lexicographic comparison is the result of comparing the two range lengths. (Seemismatch(short[], int, int, short[], int, int)
for the definition of a common and proper prefix.) API Note:
This method behaves as if:
int i = Arrays.mismatch(a, aFromIndex, aToIndex, b, bFromIndex, bToIndex); if (i >= 0 && i < Math.min(aToIndex  aFromIndex, bToIndex  bFromIndex)) return Short.compareUnsigned(a[aFromIndex + i], b[bFromIndex + i]); return (aToIndex  aFromIndex)  (bToIndex  bFromIndex);
 Parameters:
a
 the first array to compareaFromIndex
 the index (inclusive) of the first element in the first array to be comparedaToIndex
 the index (exclusive) of the last element in the first array to be comparedb
 the second array to comparebFromIndex
 the index (inclusive) of the first element in the second array to be comparedbToIndex
 the index (exclusive) of the last element in the second array to be compared Returns:
 the value
0
if, over the specified ranges, the first and second array are equal and contain the same elements in the same order; a value less than0
if, over the specified ranges, the first array is lexicographically less than the second array; and a value greater than0
if, over the specified ranges, the first array is lexicographically greater than the second array  Throws:
IllegalArgumentException
 ifaFromIndex > aToIndex
or ifbFromIndex > bToIndex
ArrayIndexOutOfBoundsException
 ifaFromIndex < 0 or aToIndex > a.length
or ifbFromIndex < 0 or bToIndex > b.length
NullPointerException
 if either array is null Since:
 9

compare
public static int compare(char[] a, char[] b)
Compares twochar
arrays lexicographically.If the two arrays share a common prefix then the lexicographic comparison is the result of comparing two elements, as if by
Character.compare(char, char)
, at an index within the respective arrays that is the prefix length. Otherwise, one array is a proper prefix of the other and, lexicographic comparison is the result of comparing the two array lengths. (Seemismatch(char[], char[])
for the definition of a common and proper prefix.)A
null
array reference is considered lexicographically less than a nonnull
array reference. Twonull
array references are considered equal.The comparison is consistent with
equals
, more specifically the following holds for arraysa
andb
:Arrays.equals(a, b) == (Arrays.compare(a, b) == 0)
 API Note:
This method behaves as if (for non
null
array references):int i = Arrays.mismatch(a, b); if (i >= 0 && i < Math.min(a.length, b.length)) return Character.compare(a[i], b[i]); return a.length  b.length;
 Parameters:
a
 the first array to compareb
 the second array to compare Returns:
 the value
0
if the first and second array are equal and contain the same elements in the same order; a value less than0
if the first array is lexicographically less than the second array; and a value greater than0
if the first array is lexicographically greater than the second array  Since:
 9

compare
public static int compare(char[] a, int aFromIndex, int aToIndex, char[] b, int bFromIndex, int bToIndex)
Compares twochar
arrays lexicographically over the specified ranges.If the two arrays, over the specified ranges, share a common prefix then the lexicographic comparison is the result of comparing two elements, as if by
Character.compare(char, char)
, at a relative index within the respective arrays that is the length of the prefix. Otherwise, one array is a proper prefix of the other and, lexicographic comparison is the result of comparing the two range lengths. (Seemismatch(char[], int, int, char[], int, int)
for the definition of a common and proper prefix.)The comparison is consistent with
equals
, more specifically the following holds for arraysa
andb
with specified ranges [aFromIndex
,atoIndex
) and [bFromIndex
,btoIndex
) respectively:Arrays.equals(a, aFromIndex, aToIndex, b, bFromIndex, bToIndex) == (Arrays.compare(a, aFromIndex, aToIndex, b, bFromIndex, bToIndex) == 0)
 API Note:
This method behaves as if:
int i = Arrays.mismatch(a, aFromIndex, aToIndex, b, bFromIndex, bToIndex); if (i >= 0 && i < Math.min(aToIndex  aFromIndex, bToIndex  bFromIndex)) return Character.compare(a[aFromIndex + i], b[bFromIndex + i]); return (aToIndex  aFromIndex)  (bToIndex  bFromIndex);
 Parameters:
a
 the first array to compareaFromIndex
 the index (inclusive) of the first element in the first array to be comparedaToIndex
 the index (exclusive) of the last element in the first array to be comparedb
 the second array to comparebFromIndex
 the index (inclusive) of the first element in the second array to be comparedbToIndex
 the index (exclusive) of the last element in the second array to be compared Returns:
 the value
0
if, over the specified ranges, the first and second array are equal and contain the same elements in the same order; a value less than0
if, over the specified ranges, the first array is lexicographically less than the second array; and a value greater than0
if, over the specified ranges, the first array is lexicographically greater than the second array  Throws:
IllegalArgumentException
 ifaFromIndex > aToIndex
or ifbFromIndex > bToIndex
ArrayIndexOutOfBoundsException
 ifaFromIndex < 0 or aToIndex > a.length
or ifbFromIndex < 0 or bToIndex > b.length
NullPointerException
 if either array isnull
 Since:
 9

compare
public static int compare(int[] a, int[] b)
Compares twoint
arrays lexicographically.If the two arrays share a common prefix then the lexicographic comparison is the result of comparing two elements, as if by
Integer.compare(int, int)
, at an index within the respective arrays that is the prefix length. Otherwise, one array is a proper prefix of the other and, lexicographic comparison is the result of comparing the two array lengths. (Seemismatch(int[], int[])
for the definition of a common and proper prefix.)A
null
array reference is considered lexicographically less than a nonnull
array reference. Twonull
array references are considered equal.The comparison is consistent with
equals
, more specifically the following holds for arraysa
andb
:Arrays.equals(a, b) == (Arrays.compare(a, b) == 0)
 API Note:
This method behaves as if (for non
null
array references):int i = Arrays.mismatch(a, b); if (i >= 0 && i < Math.min(a.length, b.length)) return Integer.compare(a[i], b[i]); return a.length  b.length;
 Parameters:
a
 the first array to compareb
 the second array to compare Returns:
 the value
0
if the first and second array are equal and contain the same elements in the same order; a value less than0
if the first array is lexicographically less than the second array; and a value greater than0
if the first array is lexicographically greater than the second array  Since:
 9

compare
public static int compare(int[] a, int aFromIndex, int aToIndex, int[] b, int bFromIndex, int bToIndex)
Compares twoint
arrays lexicographically over the specified ranges.If the two arrays, over the specified ranges, share a common prefix then the lexicographic comparison is the result of comparing two elements, as if by
Integer.compare(int, int)
, at a relative index within the respective arrays that is the length of the prefix. Otherwise, one array is a proper prefix of the other and, lexicographic comparison is the result of comparing the two range lengths. (Seemismatch(int[], int, int, int[], int, int)
for the definition of a common and proper prefix.)The comparison is consistent with
equals
, more specifically the following holds for arraysa
andb
with specified ranges [aFromIndex
,atoIndex
) and [bFromIndex
,btoIndex
) respectively:Arrays.equals(a, aFromIndex, aToIndex, b, bFromIndex, bToIndex) == (Arrays.compare(a, aFromIndex, aToIndex, b, bFromIndex, bToIndex) == 0)
 API Note:
This method behaves as if:
int i = Arrays.mismatch(a, aFromIndex, aToIndex, b, bFromIndex, bToIndex); if (i >= 0 && i < Math.min(aToIndex  aFromIndex, bToIndex  bFromIndex)) return Integer.compare(a[aFromIndex + i], b[bFromIndex + i]); return (aToIndex  aFromIndex)  (bToIndex  bFromIndex);
 Parameters:
a
 the first array to compareaFromIndex
 the index (inclusive) of the first element in the first array to be comparedaToIndex
 the index (exclusive) of the last element in the first array to be comparedb
 the second array to comparebFromIndex
 the index (inclusive) of the first element in the second array to be comparedbToIndex
 the index (exclusive) of the last element in the second array to be compared Returns:
 the value
0
if, over the specified ranges, the first and second array are equal and contain the same elements in the same order; a value less than0
if, over the specified ranges, the first array is lexicographically less than the second array; and a value greater than0
if, over the specified ranges, the first array is lexicographically greater than the second array  Throws:
IllegalArgumentException
 ifaFromIndex > aToIndex
or ifbFromIndex > bToIndex
ArrayIndexOutOfBoundsException
 ifaFromIndex < 0 or aToIndex > a.length
or ifbFromIndex < 0 or bToIndex > b.length
NullPointerException
 if either array isnull
 Since:
 9

compareUnsigned
public static int compareUnsigned(int[] a, int[] b)
Compares twoint
arrays lexicographically, numerically treating elements as unsigned.If the two arrays share a common prefix then the lexicographic comparison is the result of comparing two elements, as if by
Integer.compareUnsigned(int, int)
, at an index within the respective arrays that is the prefix length. Otherwise, one array is a proper prefix of the other and, lexicographic comparison is the result of comparing the two array lengths. (Seemismatch(int[], int[])
for the definition of a common and proper prefix.)A
null
array reference is considered lexicographically less than a nonnull
array reference. Twonull
array references are considered equal. API Note:
This method behaves as if (for non
null
array references):int i = Arrays.mismatch(a, b); if (i >= 0 && i < Math.min(a.length, b.length)) return Integer.compareUnsigned(a[i], b[i]); return a.length  b.length;
 Parameters:
a
 the first array to compareb
 the second array to compare Returns:
 the value
0
if the first and second array are equal and contain the same elements in the same order; a value less than0
if the first array is lexicographically less than the second array; and a value greater than0
if the first array is lexicographically greater than the second array  Since:
 9

compareUnsigned
public static int compareUnsigned(int[] a, int aFromIndex, int aToIndex, int[] b, int bFromIndex, int bToIndex)
Compares twoint
arrays lexicographically over the specified ranges, numerically treating elements as unsigned.If the two arrays, over the specified ranges, share a common prefix then the lexicographic comparison is the result of comparing two elements, as if by
Integer.compareUnsigned(int, int)
, at a relative index within the respective arrays that is the length of the prefix. Otherwise, one array is a proper prefix of the other and, lexicographic comparison is the result of comparing the two range lengths. (Seemismatch(int[], int, int, int[], int, int)
for the definition of a common and proper prefix.) API Note:
This method behaves as if:
int i = Arrays.mismatch(a, aFromIndex, aToIndex, b, bFromIndex, bToIndex); if (i >= 0 && i < Math.min(aToIndex  aFromIndex, bToIndex  bFromIndex)) return Integer.compareUnsigned(a[aFromIndex + i], b[bFromIndex + i]); return (aToIndex  aFromIndex)  (bToIndex  bFromIndex);
 Parameters:
a
 the first array to compareaFromIndex
 the index (inclusive) of the first element in the first array to be comparedaToIndex
 the index (exclusive) of the last element in the first array to be comparedb
 the second array to comparebFromIndex
 the index (inclusive) of the first element in the second array to be comparedbToIndex
 the index (exclusive) of the last element in the second array to be compared Returns:
 the value
0
if, over the specified ranges, the first and second array are equal and contain the same elements in the same order; a value less than0
if, over the specified ranges, the first array is lexicographically less than the second array; and a value greater than0
if, over the specified ranges, the first array is lexicographically greater than the second array  Throws:
IllegalArgumentException
 ifaFromIndex > aToIndex
or ifbFromIndex > bToIndex
ArrayIndexOutOfBoundsException
 ifaFromIndex < 0 or aToIndex > a.length
or ifbFromIndex < 0 or bToIndex > b.length
NullPointerException
 if either array is null Since:
 9

compare
public static int compare(long[] a, long[] b)
Compares twolong
arrays lexicographically.If the two arrays share a common prefix then the lexicographic comparison is the result of comparing two elements, as if by
Long.compare(long, long)
, at an index within the respective arrays that is the prefix length. Otherwise, one array is a proper prefix of the other and, lexicographic comparison is the result of comparing the two array lengths. (Seemismatch(long[], long[])
for the definition of a common and proper prefix.)A
null
array reference is considered lexicographically less than a nonnull
array reference. Twonull
array references are considered equal.The comparison is consistent with
equals
, more specifically the following holds for arraysa
andb
:Arrays.equals(a, b) == (Arrays.compare(a, b) == 0)
 API Note:
This method behaves as if (for non
null
array references):int i = Arrays.mismatch(a, b); if (i >= 0 && i < Math.min(a.length, b.length)) return Long.compare(a[i], b[i]); return a.length  b.length;
 Parameters:
a
 the first array to compareb
 the second array to compare Returns:
 the value
0
if the first and second array are equal and contain the same elements in the same order; a value less than0
if the first array is lexicographically less than the second array; and a value greater than0
if the first array is lexicographically greater than the second array  Since:
 9

compare
public static int compare(long[] a, int aFromIndex, int aToIndex, long[] b, int bFromIndex, int bToIndex)
Compares twolong
arrays lexicographically over the specified ranges.If the two arrays, over the specified ranges, share a common prefix then the lexicographic comparison is the result of comparing two elements, as if by
Long.compare(long, long)
, at a relative index within the respective arrays that is the length of the prefix. Otherwise, one array is a proper prefix of the other and, lexicographic comparison is the result of comparing the two range lengths. (Seemismatch(long[], int, int, long[], int, int)
for the definition of a common and proper prefix.)The comparison is consistent with
equals
, more specifically the following holds for arraysa
andb
with specified ranges [aFromIndex
,atoIndex
) and [bFromIndex
,btoIndex
) respectively:Arrays.equals(a, aFromIndex, aToIndex, b, bFromIndex, bToIndex) == (Arrays.compare(a, aFromIndex, aToIndex, b, bFromIndex, bToIndex) == 0)
 API Note:
This method behaves as if:
int i = Arrays.mismatch(a, aFromIndex, aToIndex, b, bFromIndex, bToIndex); if (i >= 0 && i < Math.min(aToIndex  aFromIndex, bToIndex  bFromIndex)) return Long.compare(a[aFromIndex + i], b[bFromIndex + i]); return (aToIndex  aFromIndex)  (bToIndex  bFromIndex);
 Parameters:
a
 the first array to compareaFromIndex
 the index (inclusive) of the first element in the first array to be comparedaToIndex
 the index (exclusive) of the last element in the first array to be comparedb
 the second array to comparebFromIndex
 the index (inclusive) of the first element in the second array to be comparedbToIndex
 the index (exclusive) of the last element in the second array to be compared Returns:
 the value
0
if, over the specified ranges, the first and second array are equal and contain the same elements in the same order; a value less than0
if, over the specified ranges, the first array is lexicographically less than the second array; and a value greater than0
if, over the specified ranges, the first array is lexicographically greater than the second array  Throws:
IllegalArgumentException
 ifaFromIndex > aToIndex
or ifbFromIndex > bToIndex
ArrayIndexOutOfBoundsException
 ifaFromIndex < 0 or aToIndex > a.length
or ifbFromIndex < 0 or bToIndex > b.length
NullPointerException
 if either array isnull
 Since:
 9

compareUnsigned
public static int compareUnsigned(long[] a, long[] b)
Compares twolong
arrays lexicographically, numerically treating elements as unsigned.If the two arrays share a common prefix then the lexicographic comparison is the result of comparing two elements, as if by
Long.compareUnsigned(long, long)
, at an index within the respective arrays that is the prefix length. Otherwise, one array is a proper prefix of the other and, lexicographic comparison is the result of comparing the two array lengths. (Seemismatch(long[], long[])
for the definition of a common and proper prefix.)A
null
array reference is considered lexicographically less than a nonnull
array reference. Twonull
array references are considered equal. API Note:
This method behaves as if (for non
null
array references):int i = Arrays.mismatch(a, b); if (i >= 0 && i < Math.min(a.length, b.length)) return Long.compareUnsigned(a[i], b[i]); return a.length  b.length;
 Parameters:
a
 the first array to compareb
 the second array to compare Returns:
 the value
0
if the first and second array are equal and contain the same elements in the same order; a value less than0
if the first array is lexicographically less than the second array; and a value greater than0
if the first array is lexicographically greater than the second array  Since:
 9

compareUnsigned
public static int compareUnsigned(long[] a, int aFromIndex, int aToIndex, long[] b, int bFromIndex, int bToIndex)
Compares twolong
arrays lexicographically over the specified ranges, numerically treating elements as unsigned.If the two arrays, over the specified ranges, share a common prefix then the lexicographic comparison is the result of comparing two elements, as if by
Long.compareUnsigned(long, long)
, at a relative index within the respective arrays that is the length of the prefix. Otherwise, one array is a proper prefix of the other and, lexicographic comparison is the result of comparing the two range lengths. (Seemismatch(long[], int, int, long[], int, int)
for the definition of a common and proper prefix.) API Note:
This method behaves as if:
int i = Arrays.mismatch(a, aFromIndex, aToIndex, b, bFromIndex, bToIndex); if (i >= 0 && i < Math.min(aToIndex  aFromIndex, bToIndex  bFromIndex)) return Long.compareUnsigned(a[aFromIndex + i], b[bFromIndex + i]); return (aToIndex  aFromIndex)  (bToIndex  bFromIndex);
 Parameters:
a
 the first array to compareaFromIndex
 the index (inclusive) of the first element in the first array to be comparedaToIndex
 the index (exclusive) of the last element in the first array to be comparedb
 the second array to comparebFromIndex
 the index (inclusive) of the first element in the second array to be comparedbToIndex
 the index (exclusive) of the last element in the second array to be compared Returns:
 the value
0
if, over the specified ranges, the first and second array are equal and contain the same elements in the same order; a value less than0
if, over the specified ranges, the first array is lexicographically less than the second array; and a value greater than0
if, over the specified ranges, the first array is lexicographically greater than the second array  Throws:
IllegalArgumentException
 ifaFromIndex > aToIndex
or ifbFromIndex > bToIndex
ArrayIndexOutOfBoundsException
 ifaFromIndex < 0 or aToIndex > a.length
or ifbFromIndex < 0 or bToIndex > b.length
NullPointerException
 if either array is null Since:
 9

compare
public static int compare(float[] a, float[] b)
Compares twofloat
arrays lexicographically.If the two arrays share a common prefix then the lexicographic comparison is the result of comparing two elements, as if by
Float.compare(float, float)
, at an index within the respective arrays that is the prefix length. Otherwise, one array is a proper prefix of the other and, lexicographic comparison is the result of comparing the two array lengths. (Seemismatch(float[], float[])
for the definition of a common and proper prefix.)A
null
array reference is considered lexicographically less than a nonnull
array reference. Twonull
array references are considered equal.The comparison is consistent with
equals
, more specifically the following holds for arraysa
andb
:Arrays.equals(a, b) == (Arrays.compare(a, b) == 0)
 API Note:
This method behaves as if (for non
null
array references):int i = Arrays.mismatch(a, b); if (i >= 0 && i < Math.min(a.length, b.length)) return Float.compare(a[i], b[i]); return a.length  b.length;
 Parameters:
a
 the first array to compareb
 the second array to compare Returns:
 the value
0
if the first and second array are equal and contain the same elements in the same order; a value less than0
if the first array is lexicographically less than the second array; and a value greater than0
if the first array is lexicographically greater than the second array  Since:
 9

compare
public static int compare(float[] a, int aFromIndex, int aToIndex, float[] b, int bFromIndex, int bToIndex)
Compares twofloat
arrays lexicographically over the specified ranges.If the two arrays, over the specified ranges, share a common prefix then the lexicographic comparison is the result of comparing two elements, as if by
Float.compare(float, float)
, at a relative index within the respective arrays that is the length of the prefix. Otherwise, one array is a proper prefix of the other and, lexicographic comparison is the result of comparing the two range lengths. (Seemismatch(float[], int, int, float[], int, int)
for the definition of a common and proper prefix.)The comparison is consistent with
equals
, more specifically the following holds for arraysa
andb
with specified ranges [aFromIndex
,atoIndex
) and [bFromIndex
,btoIndex
) respectively:Arrays.equals(a, aFromIndex, aToIndex, b, bFromIndex, bToIndex) == (Arrays.compare(a, aFromIndex, aToIndex, b, bFromIndex, bToIndex) == 0)
 API Note:
This method behaves as if:
int i = Arrays.mismatch(a, aFromIndex, aToIndex, b, bFromIndex, bToIndex); if (i >= 0 && i < Math.min(aToIndex  aFromIndex, bToIndex  bFromIndex)) return Float.compare(a[aFromIndex + i], b[bFromIndex + i]); return (aToIndex  aFromIndex)  (bToIndex  bFromIndex);
 Parameters:
a
 the first array to compareaFromIndex
 the index (inclusive) of the first element in the first array to be comparedaToIndex
 the index (exclusive) of the last element in the first array to be comparedb
 the second array to comparebFromIndex
 the index (inclusive) of the first element in the second array to be comparedbToIndex
 the index (exclusive) of the last element in the second array to be compared Returns:
 the value
0
if, over the specified ranges, the first and second array are equal and contain the same elements in the same order; a value less than0
if, over the specified ranges, the first array is lexicographically less than the second array; and a value greater than0
if, over the specified ranges, the first array is lexicographically greater than the second array  Throws:
IllegalArgumentException
 ifaFromIndex > aToIndex
or ifbFromIndex > bToIndex
ArrayIndexOutOfBoundsException
 ifaFromIndex < 0 or aToIndex > a.length
or ifbFromIndex < 0 or bToIndex > b.length
NullPointerException
 if either array isnull
 Since:
 9

compare
public static int compare(double[] a, double[] b)
Compares twodouble
arrays lexicographically.If the two arrays share a common prefix then the lexicographic comparison is the result of comparing two elements, as if by
Double.compare(double, double)
, at an index within the respective arrays that is the prefix length. Otherwise, one array is a proper prefix of the other and, lexicographic comparison is the result of comparing the two array lengths. (Seemismatch(double[], double[])
for the definition of a common and proper prefix.)A
null
array reference is considered lexicographically less than a nonnull
array reference. Twonull
array references are considered equal.The comparison is consistent with
equals
, more specifically the following holds for arraysa
andb
:Arrays.equals(a, b) == (Arrays.compare(a, b) == 0)
 API Note:
This method behaves as if (for non
null
array references):int i = Arrays.mismatch(a, b); if (i >= 0 && i < Math.min(a.length, b.length)) return Double.compare(a[i], b[i]); return a.length  b.length;
 Parameters:
a
 the first array to compareb
 the second array to compare Returns:
 the value
0
if the first and second array are equal and contain the same elements in the same order; a value less than0
if the first array is lexicographically less than the second array; and a value greater than0
if the first array is lexicographically greater than the second array  Since:
 9

compare
public static int compare(double[] a, int aFromIndex, int aToIndex, double[] b, int bFromIndex, int bToIndex)
Compares twodouble
arrays lexicographically over the specified ranges.If the two arrays, over the specified ranges, share a common prefix then the lexicographic comparison is the result of comparing two elements, as if by
Double.compare(double, double)
, at a relative index within the respective arrays that is the length of the prefix. Otherwise, one array is a proper prefix of the other and, lexicographic comparison is the result of comparing the two range lengths. (Seemismatch(double[], int, int, double[], int, int)
for the definition of a common and proper prefix.)The comparison is consistent with
equals
, more specifically the following holds for arraysa
andb
with specified ranges [aFromIndex
,atoIndex
) and [bFromIndex
,btoIndex
) respectively:Arrays.equals(a, aFromIndex, aToIndex, b, bFromIndex, bToIndex) == (Arrays.compare(a, aFromIndex, aToIndex, b, bFromIndex, bToIndex) == 0)
 API Note:
This method behaves as if:
int i = Arrays.mismatch(a, aFromIndex, aToIndex, b, bFromIndex, bToIndex); if (i >= 0 && i < Math.min(aToIndex  aFromIndex, bToIndex  bFromIndex)) return Double.compare(a[aFromIndex + i], b[bFromIndex + i]); return (aToIndex  aFromIndex)  (bToIndex  bFromIndex);
 Parameters:
a
 the first array to compareaFromIndex
 the index (inclusive) of the first element in the first array to be comparedaToIndex
 the index (exclusive) of the last element in the first array to be comparedb
 the second array to comparebFromIndex
 the index (inclusive) of the first element in the second array to be comparedbToIndex
 the index (exclusive) of the last element in the second array to be compared Returns:
 the value
0
if, over the specified ranges, the first and second array are equal and contain the same elements in the same order; a value less than0
if, over the specified ranges, the first array is lexicographically less than the second array; and a value greater than0
if, over the specified ranges, the first array is lexicographically greater than the second array  Throws:
IllegalArgumentException
 ifaFromIndex > aToIndex
or ifbFromIndex > bToIndex
ArrayIndexOutOfBoundsException
 ifaFromIndex < 0 or aToIndex > a.length
or ifbFromIndex < 0 or bToIndex > b.length
NullPointerException
 if either array isnull
 Since:
 9

compare
public static <T extends Comparable<? super T>> int compare(T[] a, T[] b)
Compares twoObject
arrays, within comparable elements, lexicographically.If the two arrays share a common prefix then the lexicographic comparison is the result of comparing two elements of type
T
at an indexi
within the respective arrays that is the prefix length, as if by:
Otherwise, one array is a proper prefix of the other and, lexicographic comparison is the result of comparing the two array lengths. (SeeComparator.nullsFirst(Comparator.<T>naturalOrder()). compare(a[i], b[i])
mismatch(Object[], Object[])
for the definition of a common and proper prefix.)A
null
array reference is considered lexicographically less than a nonnull
array reference. Twonull
array references are considered equal. Anull
array element is considered lexicographically than a nonnull
array element. Twonull
array elements are considered equal.The comparison is consistent with
equals
, more specifically the following holds for arraysa
andb
:Arrays.equals(a, b) == (Arrays.compare(a, b) == 0)
 API Note:
This method behaves as if (for non
null
array references and elements):int i = Arrays.mismatch(a, b); if (i >= 0 && i < Math.min(a.length, b.length)) return a[i].compareTo(b[i]); return a.length  b.length;
 Type Parameters:
T
 the type of comparable array elements Parameters:
a
 the first array to compareb
 the second array to compare Returns:
 the value
0
if the first and second array are equal and contain the same elements in the same order; a value less than0
if the first array is lexicographically less than the second array; and a value greater than0
if the first array is lexicographically greater than the second array  Since:
 9

compare
public static <T extends Comparable<? super T>> int compare(T[] a, int aFromIndex, int aToIndex, T[] b, int bFromIndex, int bToIndex)
Compares twoObject
arrays lexicographically over the specified ranges.If the two arrays, over the specified ranges, share a common prefix then the lexicographic comparison is the result of comparing two elements of type
T
at a relative indexi
within the respective arrays that is the prefix length, as if by:
Otherwise, one array is a proper prefix of the other and, lexicographic comparison is the result of comparing the two range lengths. (SeeComparator.nullsFirst(Comparator.<T>naturalOrder()). compare(a[aFromIndex + i, b[bFromIndex + i])
mismatch(Object[], int, int, Object[], int, int)
for the definition of a common and proper prefix.)The comparison is consistent with
equals
, more specifically the following holds for arraysa
andb
with specified ranges [aFromIndex
,atoIndex
) and [bFromIndex
,btoIndex
) respectively:Arrays.equals(a, aFromIndex, aToIndex, b, bFromIndex, bToIndex) == (Arrays.compare(a, aFromIndex, aToIndex, b, bFromIndex, bToIndex) == 0)
 API Note:
This method behaves as if (for non
null
array elements):int i = Arrays.mismatch(a, aFromIndex, aToIndex, b, bFromIndex, bToIndex); if (i >= 0 && i < Math.min(aToIndex  aFromIndex, bToIndex  bFromIndex)) return a[aFromIndex + i].compareTo(b[bFromIndex + i]); return (aToIndex  aFromIndex)  (bToIndex  bFromIndex);
 Type Parameters:
T
 the type of comparable array elements Parameters:
a
 the first array to compareaFromIndex
 the index (inclusive) of the first element in the first array to be comparedaToIndex
 the index (exclusive) of the last element in the first array to be comparedb
 the second array to comparebFromIndex
 the index (inclusive) of the first element in the second array to be comparedbToIndex
 the index (exclusive) of the last element in the second array to be compared Returns:
 the value
0
if, over the specified ranges, the first and second array are equal and contain the same elements in the same order; a value less than0
if, over the specified ranges, the first array is lexicographically less than the second array; and a value greater than0
if, over the specified ranges, the first array is lexicographically greater than the second array  Throws:
IllegalArgumentException
 ifaFromIndex > aToIndex
or ifbFromIndex > bToIndex
ArrayIndexOutOfBoundsException
 ifaFromIndex < 0 or aToIndex > a.length
or ifbFromIndex < 0 or bToIndex > b.length
NullPointerException
 if either array isnull
 Since:
 9

compare
public static <T> int compare(T[] a, T[] b, Comparator<? super T> cmp)
Compares twoObject
arrays lexicographically using a specified comparator.If the two arrays share a common prefix then the lexicographic comparison is the result of comparing with the specified comparator two elements at an index within the respective arrays that is the prefix length. Otherwise, one array is a proper prefix of the other and, lexicographic comparison is the result of comparing the two array lengths. (See
mismatch(Object[], Object[])
for the definition of a common and proper prefix.)A
null
array reference is considered lexicographically less than a nonnull
array reference. Twonull
array references are considered equal. API Note:
This method behaves as if (for non
null
array references):int i = Arrays.mismatch(a, b, cmp); if (i >= 0 && i < Math.min(a.length, b.length)) return cmp.compare(a[i], b[i]); return a.length  b.length;
 Type Parameters:
T
 the type of array elements Parameters:
a
 the first array to compareb
 the second array to comparecmp
 the comparator to compare array elements Returns:
 the value
0
if the first and second array are equal and contain the same elements in the same order; a value less than0
if the first array is lexicographically less than the second array; and a value greater than0
if the first array is lexicographically greater than the second array  Throws:
NullPointerException
 if the comparator isnull
 Since:
 9

compare
public static <T> int compare(T[] a, int aFromIndex, int aToIndex, T[] b, int bFromIndex, int bToIndex, Comparator<? super T> cmp)
Compares twoObject
arrays lexicographically over the specified ranges.If the two arrays, over the specified ranges, share a common prefix then the lexicographic comparison is the result of comparing with the specified comparator two elements at a relative index within the respective arrays that is the prefix length. Otherwise, one array is a proper prefix of the other and, lexicographic comparison is the result of comparing the two range lengths. (See
mismatch(Object[], int, int, Object[], int, int)
for the definition of a common and proper prefix.) API Note:
This method behaves as if (for non
null
array elements):int i = Arrays.mismatch(a, aFromIndex, aToIndex, b, bFromIndex, bToIndex, cmp); if (i >= 0 && i < Math.min(aToIndex  aFromIndex, bToIndex  bFromIndex)) return cmp.compare(a[aFromIndex + i], b[bFromIndex + i]); return (aToIndex  aFromIndex)  (bToIndex  bFromIndex);
 Type Parameters:
T
 the type of array elements Parameters:
a
 the first array to compareaFromIndex
 the index (inclusive) of the first element in the first array to be comparedaToIndex
 the index (exclusive) of the last element in the first array to be comparedb
 the second array to comparebFromIndex
 the index (inclusive) of the first element in the second array to be comparedbToIndex
 the index (exclusive) of the last element in the second array to be comparedcmp
 the comparator to compare array elements Returns:
 the value
0
if, over the specified ranges, the first and second array are equal and contain the same elements in the same order; a value less than0
if, over the specified ranges, the first array is lexicographically less than the second array; and a value greater than0
if, over the specified ranges, the first array is lexicographically greater than the second array  Throws:
IllegalArgumentException
 ifaFromIndex > aToIndex
or ifbFromIndex > bToIndex
ArrayIndexOutOfBoundsException
 ifaFromIndex < 0 or aToIndex > a.length
or ifbFromIndex < 0 or bToIndex > b.length
NullPointerException
 if either array or the comparator isnull
 Since:
 9

mismatch
public static int mismatch(boolean[] a, boolean[] b)
Finds and returns the index of the first mismatch between twoboolean
arrays, otherwise return 1 if no mismatch is found. The index will be in the range of 0 (inclusive) up to the length (inclusive) of the smaller array.If the two arrays share a common prefix then the returned index is the length of the common prefix and it follows that there is a mismatch between the two elements at that index within the respective arrays. If one array is a proper prefix of the other then the returned index is the length of the smaller array and it follows that the index is only valid for the larger array. Otherwise, there is no mismatch.
Two non
null
arrays,a
andb
, share a common prefix of lengthpl
if the following expression is true:
Note that a common prefix length ofpl >= 0 && pl < Math.min(a.length, b.length) && Arrays.equals(a, 0, pl, b, 0, pl) && a[pl] != b[pl]
0
indicates that the first elements from each array mismatch.Two non
null
arrays,a
andb
, share a proper prefix if the following expression is true:a.length != b.length && Arrays.equals(a, 0, Math.min(a.length, b.length), b, 0, Math.min(a.length, b.length))
 Parameters:
a
 the first array to be tested for a mismatchb
 the second array to be tested for a mismatch Returns:
 the index of the first mismatch between the two arrays,
otherwise
1
.  Throws:
NullPointerException
 if either array isnull
 Since:
 9

mismatch
public static int mismatch(boolean[] a, int aFromIndex, int aToIndex, boolean[] b, int bFromIndex, int bToIndex)
Finds and returns the relative index of the first mismatch between twoboolean
arrays over the specified ranges, otherwise return 1 if no mismatch is found. The index will be in the range of 0 (inclusive) up to the length (inclusive) of the smaller range.If the two arrays, over the specified ranges, share a common prefix then the returned relative index is the length of the common prefix and it follows that there is a mismatch between the two elements at that relative index within the respective arrays. If one array is a proper prefix of the other, over the specified ranges, then the returned relative index is the length of the smaller range and it follows that the relative index is only valid for the array with the larger range. Otherwise, there is no mismatch.
Two non
null
arrays,a
andb
with specified ranges [aFromIndex
,atoIndex
) and [bFromIndex
,btoIndex
) respectively, share a common prefix of lengthpl
if the following expression is true:
Note that a common prefix length ofpl >= 0 && pl < Math.min(aToIndex  aFromIndex, bToIndex  bFromIndex) && Arrays.equals(a, aFromIndex, aFromIndex + pl, b, bFromIndex, bFromIndex + pl) && a[aFromIndex + pl] != b[bFromIndex + pl]
0
indicates that the first elements from each array mismatch.Two non
null
arrays,a
andb
with specified ranges [aFromIndex
,atoIndex
) and [bFromIndex
,btoIndex
) respectively, share a proper if the following expression is true:(aToIndex  aFromIndex) != (bToIndex  bFromIndex) && Arrays.equals(a, 0, Math.min(aToIndex  aFromIndex, bToIndex  bFromIndex), b, 0, Math.min(aToIndex  aFromIndex, bToIndex  bFromIndex))
 Parameters:
a
 the first array to be tested for a mismatchaFromIndex
 the index (inclusive) of the first element in the first array to be testedaToIndex
 the index (exclusive) of the last element in the first array to be testedb
 the second array to be tested for a mismatchbFromIndex
 the index (inclusive) of the first element in the second array to be testedbToIndex
 the index (exclusive) of the last element in the second array to be tested Returns:
 the relative index of the first mismatch between the two arrays
over the specified ranges, otherwise
1
.  Throws:
IllegalArgumentException
 ifaFromIndex > aToIndex
or ifbFromIndex > bToIndex
ArrayIndexOutOfBoundsException
 ifaFromIndex < 0 or aToIndex > a.length
or ifbFromIndex < 0 or bToIndex > b.length
NullPointerException
 if either array isnull
 Since:
 9

mismatch
public static int mismatch(byte[] a, byte[] b)
Finds and returns the index of the first mismatch between twobyte
arrays, otherwise return 1 if no mismatch is found. The index will be in the range of 0 (inclusive) up to the length (inclusive) of the smaller array.If the two arrays share a common prefix then the returned index is the length of the common prefix and it follows that there is a mismatch between the two elements at that index within the respective arrays. If one array is a proper prefix of the other then the returned index is the length of the smaller array and it follows that the index is only valid for the larger array. Otherwise, there is no mismatch.
Two non
null
arrays,a
andb
, share a common prefix of lengthpl
if the following expression is true:
Note that a common prefix length ofpl >= 0 && pl < Math.min(a.length, b.length) && Arrays.equals(a, 0, pl, b, 0, pl) && a[pl] != b[pl]
0
indicates that the first elements from each array mismatch.Two non
null
arrays,a
andb
, share a proper prefix if the following expression is true:a.length != b.length && Arrays.equals(a, 0, Math.min(a.length, b.length), b, 0, Math.min(a.length, b.length))
 Parameters:
a
 the first array to be tested for a mismatchb
 the second array to be tested for a mismatch Returns:
 the index of the first mismatch between the two arrays,
otherwise
1
.  Throws:
NullPointerException
 if either array isnull
 Since:
 9

mismatch
public static int mismatch(byte[] a, int aFromIndex, int aToIndex, byte[] b, int bFromIndex, int bToIndex)
Finds and returns the relative index of the first mismatch between twobyte
arrays over the specified ranges, otherwise return 1 if no mismatch is found. The index will be in the range of 0 (inclusive) up to the length (inclusive) of the smaller range.If the two arrays, over the specified ranges, share a common prefix then the returned relative index is the length of the common prefix and it follows that there is a mismatch between the two elements at that relative index within the respective arrays. If one array is a proper prefix of the other, over the specified ranges, then the returned relative index is the length of the smaller range and it follows that the relative index is only valid for the array with the larger range. Otherwise, there is no mismatch.
Two non
null
arrays,a
andb
with specified ranges [aFromIndex
,atoIndex
) and [bFromIndex
,btoIndex
) respectively, share a common prefix of lengthpl
if the following expression is true:
Note that a common prefix length ofpl >= 0 && pl < Math.min(aToIndex  aFromIndex, bToIndex  bFromIndex) && Arrays.equals(a, aFromIndex, aFromIndex + pl, b, bFromIndex, bFromIndex + pl) && a[aFromIndex + pl] != b[bFromIndex + pl]
0
indicates that the first elements from each array mismatch.Two non
null
arrays,a
andb
with specified ranges [aFromIndex
,atoIndex
) and [bFromIndex
,btoIndex
) respectively, share a proper if the following expression is true:(aToIndex  aFromIndex) != (bToIndex  bFromIndex) && Arrays.equals(a, 0, Math.min(aToIndex  aFromIndex, bToIndex  bFromIndex), b, 0, Math.min(aToIndex  aFromIndex, bToIndex  bFromIndex))
 Parameters:
a
 the first array to be tested for a mismatchaFromIndex
 the index (inclusive) of the first element in the first array to be testedaToIndex
 the index (exclusive) of the last element in the first array to be testedb
 the second array to be tested for a mismatchbFromIndex
 the index (inclusive) of the first element in the second array to be testedbToIndex
 the index (exclusive) of the last element in the second array to be tested Returns:
 the relative index of the first mismatch between the two arrays
over the specified ranges, otherwise
1
.  Throws:
IllegalArgumentException
 ifaFromIndex > aToIndex
or ifbFromIndex > bToIndex
ArrayIndexOutOfBoundsException
 ifaFromIndex < 0 or aToIndex > a.length
or ifbFromIndex < 0 or bToIndex > b.length
NullPointerException
 if either array isnull
 Since:
 9

mismatch
public static int mismatch(char[] a, char[] b)
Finds and returns the index of the first mismatch between twochar
arrays, otherwise return 1 if no mismatch is found. The index will be in the range of 0 (inclusive) up to the length (inclusive) of the smaller array.If the two arrays share a common prefix then the returned index is the length of the common prefix and it follows that there is a mismatch between the two elements at that index within the respective arrays. If one array is a proper prefix of the other then the returned index is the length of the smaller array and it follows that the index is only valid for the larger array. Otherwise, there is no mismatch.
Two non
null
arrays,a
andb
, share a common prefix of lengthpl
if the following expression is true:
Note that a common prefix length ofpl >= 0 && pl < Math.min(a.length, b.length) && Arrays.equals(a, 0, pl, b, 0, pl) && a[pl] != b[pl]
0
indicates that the first elements from each array mismatch.Two non
null
arrays,a
andb
, share a proper prefix if the following expression is true:a.length != b.length && Arrays.equals(a, 0, Math.min(a.length, b.length), b, 0, Math.min(a.length, b.length))
 Parameters:
a
 the first array to be tested for a mismatchb
 the second array to be tested for a mismatch Returns:
 the index of the first mismatch between the two arrays,
otherwise
1
.  Throws:
NullPointerException
 if either array isnull
 Since:
 9

mismatch
public static int mismatch(char[] a, int aFromIndex, int aToIndex, char[] b, int bFromIndex, int bToIndex)
Finds and returns the relative index of the first mismatch between twochar
arrays over the specified ranges, otherwise return 1 if no mismatch is found. The index will be in the range of 0 (inclusive) up to the length (inclusive) of the smaller range.If the two arrays, over the specified ranges, share a common prefix then the returned relative index is the length of the common prefix and it follows that there is a mismatch between the two elements at that relative index within the respective arrays. If one array is a proper prefix of the other, over the specified ranges, then the returned relative index is the length of the smaller range and it follows that the relative index is only valid for the array with the larger range. Otherwise, there is no mismatch.
Two non
null
arrays,a
andb
with specified ranges [aFromIndex
,atoIndex
) and [bFromIndex
,btoIndex
) respectively, share a common prefix of lengthpl
if the following expression is true:
Note that a common prefix length ofpl >= 0 && pl < Math.min(aToIndex  aFromIndex, bToIndex  bFromIndex) && Arrays.equals(a, aFromIndex, aFromIndex + pl, b, bFromIndex, bFromIndex + pl) && a[aFromIndex + pl] != b[bFromIndex + pl]
0
indicates that the first elements from each array mismatch.Two non
null
arrays,a
andb
with specified ranges [aFromIndex
,atoIndex
) and [bFromIndex
,btoIndex
) respectively, share a proper if the following expression is true:(aToIndex  aFromIndex) != (bToIndex  bFromIndex) && Arrays.equals(a, 0, Math.min(aToIndex  aFromIndex, bToIndex  bFromIndex), b, 0, Math.min(aToIndex  aFromIndex, bToIndex  bFromIndex))
 Parameters:
a
 the first array to be tested for a mismatchaFromIndex
 the index (inclusive) of the first element in the first array to be testedaToIndex
 the index (exclusive) of the last element in the first array to be testedb
 the second array to be tested for a mismatchbFromIndex
 the index (inclusive) of the first element in the second array to be testedbToIndex
 the index (exclusive) of the last element in the second array to be tested Returns:
 the relative index of the first mismatch between the two arrays
over the specified ranges, otherwise
1
.  Throws:
IllegalArgumentException
 ifaFromIndex > aToIndex
or ifbFromIndex > bToIndex
ArrayIndexOutOfBoundsException
 ifaFromIndex < 0 or aToIndex > a.length
or ifbFromIndex < 0 or bToIndex > b.length
NullPointerException
 if either array isnull
 Since:
 9

mismatch
public static int mismatch(short[] a, short[] b)
Finds and returns the index of the first mismatch between twoshort
arrays, otherwise return 1 if no mismatch is found. The index will be in the range of 0 (inclusive) up to the length (inclusive) of the smaller array.If the two arrays share a common prefix then the returned index is the length of the common prefix and it follows that there is a mismatch between the two elements at that index within the respective arrays. If one array is a proper prefix of the other then the returned index is the length of the smaller array and it follows that the index is only valid for the larger array. Otherwise, there is no mismatch.
Two non
null
arrays,a
andb
, share a common prefix of lengthpl
if the following expression is true:
Note that a common prefix length ofpl >= 0 && pl < Math.min(a.length, b.length) && Arrays.equals(a, 0, pl, b, 0, pl) && a[pl] != b[pl]
0
indicates that the first elements from each array mismatch.Two non
null
arrays,a
andb
, share a proper prefix if the following expression is true:a.length != b.length && Arrays.equals(a, 0, Math.min(a.length, b.length), b, 0, Math.min(a.length, b.length))
 Parameters:
a
 the first array to be tested for a mismatchb
 the second array to be tested for a mismatch Returns:
 the index of the first mismatch between the two arrays,
otherwise
1
.  Throws:
NullPointerException
 if either array isnull
 Since:
 9

mismatch
public static int mismatch(short[] a, int aFromIndex, int aToIndex, short[] b, int bFromIndex, int bToIndex)
Finds and returns the relative index of the first mismatch between twoshort
arrays over the specified ranges, otherwise return 1 if no mismatch is found. The index will be in the range of 0 (inclusive) up to the length (inclusive) of the smaller range.If the two arrays, over the specified ranges, share a common prefix then the returned relative index is the length of the common prefix and it follows that there is a mismatch between the two elements at that relative index within the respective arrays. If one array is a proper prefix of the other, over the specified ranges, then the returned relative index is the length of the smaller range and it follows that the relative index is only valid for the array with the larger range. Otherwise, there is no mismatch.
Two non
null
arrays,a
andb
with specified ranges [aFromIndex
,atoIndex
) and [bFromIndex
,btoIndex
) respectively, share a common prefix of lengthpl
if the following expression is true:
Note that a common prefix length ofpl >= 0 && pl < Math.min(aToIndex  aFromIndex, bToIndex  bFromIndex) && Arrays.equals(a, aFromIndex, aFromIndex + pl, b, bFromIndex, bFromIndex + pl) && a[aFromIndex + pl] != b[bFromIndex + pl]
0
indicates that the first elements from each array mismatch.Two non
null
arrays,a
andb
with specified ranges [aFromIndex
,atoIndex
) and [bFromIndex
,btoIndex
) respectively, share a proper if the following expression is true:(aToIndex  aFromIndex) != (bToIndex  bFromIndex) && Arrays.equals(a, 0, Math.min(aToIndex  aFromIndex, bToIndex  bFromIndex), b, 0, Math.min(aToIndex  aFromIndex, bToIndex  bFromIndex))
 Parameters:
a
 the first array to be tested for a mismatchaFromIndex
 the index (inclusive) of the first element in the first array to be testedaToIndex
 the index (exclusive) of the last element in the first array to be testedb
 the second array to be tested for a mismatchbFromIndex
 the index (inclusive) of the first element in the second array to be testedbToIndex
 the index (exclusive) of the last element in the second array to be tested Returns:
 the relative index of the first mismatch between the two arrays
over the specified ranges, otherwise
1
.  Throws:
IllegalArgumentException
 ifaFromIndex > aToIndex
or ifbFromIndex > bToIndex
ArrayIndexOutOfBoundsException
 ifaFromIndex < 0 or aToIndex > a.length
or ifbFromIndex < 0 or bToIndex > b.length
NullPointerException
 if either array isnull
 Since:
 9

mismatch
public static int mismatch(int[] a, int[] b)
Finds and returns the index of the first mismatch between twoint
arrays, otherwise return 1 if no mismatch is found. The index will be in the range of 0 (inclusive) up to the length (inclusive) of the smaller array.If the two arrays share a common prefix then the returned index is the length of the common prefix and it follows that there is a mismatch between the two elements at that index within the respective arrays. If one array is a proper prefix of the other then the returned index is the length of the smaller array and it follows that the index is only valid for the larger array. Otherwise, there is no mismatch.
Two non
null
arrays,a
andb
, share a common prefix of lengthpl
if the following expression is true:
Note that a common prefix length ofpl >= 0 && pl < Math.min(a.length, b.length) && Arrays.equals(a, 0, pl, b, 0, pl) && a[pl] != b[pl]
0
indicates that the first elements from each array mismatch.Two non
null
arrays,a
andb
, share a proper prefix if the following expression is true:a.length != b.length && Arrays.equals(a, 0, Math.min(a.length, b.length), b, 0, Math.min(a.length, b.length))
 Parameters:
a
 the first array to be tested for a mismatchb
 the second array to be tested for a mismatch Returns:
 the index of the first mismatch between the two arrays,
otherwise
1
.  Throws:
NullPointerException
 if either array isnull
 Since:
 9

mismatch
public static int mismatch(int[] a, int aFromIndex, int aToIndex, int[] b, int bFromIndex, int bToIndex)
Finds and returns the relative index of the first mismatch between twoint
arrays over the specified ranges, otherwise return 1 if no mismatch is found. The index will be in the range of 0 (inclusive) up to the length (inclusive) of the smaller range.If the two arrays, over the specified ranges, share a common prefix then the returned relative index is the length of the common prefix and it follows that there is a mismatch between the two elements at that relative index within the respective arrays. If one array is a proper prefix of the other, over the specified ranges, then the returned relative index is the length of the smaller range and it follows that the relative index is only valid for the array with the larger range. Otherwise, there is no mismatch.
Two non
null
arrays,a
andb
with specified ranges [aFromIndex
,atoIndex
) and [bFromIndex
,btoIndex
) respectively, share a common prefix of lengthpl
if the following expression is true:
Note that a common prefix length ofpl >= 0 && pl < Math.min(aToIndex  aFromIndex, bToIndex  bFromIndex) && Arrays.equals(a, aFromIndex, aFromIndex + pl, b, bFromIndex, bFromIndex + pl) && a[aFromIndex + pl] != b[bFromIndex + pl]
0
indicates that the first elements from each array mismatch.Two non
null
arrays,a
andb
with specified ranges [aFromIndex
,atoIndex
) and [bFromIndex
,btoIndex
) respectively, share a proper if the following expression is true:(aToIndex  aFromIndex) != (bToIndex  bFromIndex) && Arrays.equals(a, 0, Math.min(aToIndex  aFromIndex, bToIndex  bFromIndex), b, 0, Math.min(aToIndex  aFromIndex, bToIndex  bFromIndex))
 Parameters:
a
 the first array to be tested for a mismatchaFromIndex
 the index (inclusive) of the first element in the first array to be testedaToIndex
 the index (exclusive) of the last element in the first array to be testedb
 the second array to be tested for a mismatchbFromIndex
 the index (inclusive) of the first element in the second array to be testedbToIndex
 the index (exclusive) of the last element in the second array to be tested Returns:
 the relative index of the first mismatch between the two arrays
over the specified ranges, otherwise
1
.  Throws:
IllegalArgumentException
 ifaFromIndex > aToIndex
or ifbFromIndex > bToIndex
ArrayIndexOutOfBoundsException
 ifaFromIndex < 0 or aToIndex > a.length
or ifbFromIndex < 0 or bToIndex > b.length
NullPointerException
 if either array isnull
 Since:
 9

mismatch
public static int mismatch(long[] a, long[] b)
Finds and returns the index of the first mismatch between twolong
arrays, otherwise return 1 if no mismatch is found. The index will be in the range of 0 (inclusive) up to the length (inclusive) of the smaller array.If the two arrays share a common prefix then the returned index is the length of the common prefix and it follows that there is a mismatch between the two elements at that index within the respective arrays. If one array is a proper prefix of the other then the returned index is the length of the smaller array and it follows that the index is only valid for the larger array. Otherwise, there is no mismatch.
Two non
null
arrays,a
andb
, share a common prefix of lengthpl
if the following expression is true:
Note that a common prefix length ofpl >= 0 && pl < Math.min(a.length, b.length) && Arrays.equals(a, 0, pl, b, 0, pl) && a[pl] != b[pl]
0
indicates that the first elements from each array mismatch.Two non
null
arrays,a
andb
, share a proper prefix if the following expression is true:a.length != b.length && Arrays.equals(a, 0, Math.min(a.length, b.length), b, 0, Math.min(a.length, b.length))
 Parameters:
a
 the first array to be tested for a mismatchb
 the second array to be tested for a mismatch Returns:
 the index of the first mismatch between the two arrays,
otherwise
1
.  Throws:
NullPointerException
 if either array isnull
 Since:
 9

mismatch
public static int mismatch(long[] a, int aFromIndex, int aToIndex, long[] b, int bFromIndex, int bToIndex)
Finds and returns the relative index of the first mismatch between twolong
arrays over the specified ranges, otherwise return 1 if no mismatch is found. The index will be in the range of 0 (inclusive) up to the length (inclusive) of the smaller range.If the two arrays, over the specified ranges, share a common prefix then the returned relative index is the length of the common prefix and it follows that there is a mismatch between the two elements at that relative index within the respective arrays. If one array is a proper prefix of the other, over the specified ranges, then the returned relative index is the length of the smaller range and it follows that the relative index is only valid for the array with the larger range. Otherwise, there is no mismatch.
Two non
null
arrays,a
andb
with specified ranges [aFromIndex
,atoIndex
) and [bFromIndex
,btoIndex
) respectively, share a common prefix of lengthpl
if the following expression is true:
Note that a common prefix length ofpl >= 0 && pl < Math.min(aToIndex  aFromIndex, bToIndex  bFromIndex) && Arrays.equals(a, aFromIndex, aFromIndex + pl, b, bFromIndex, bFromIndex + pl) && a[aFromIndex + pl] != b[bFromIndex + pl]
0
indicates that the first elements from each array mismatch.Two non
null
arrays,a
andb
with specified ranges [aFromIndex
,atoIndex
) and [bFromIndex
,btoIndex
) respectively, share a proper if the following expression is true:(aToIndex  aFromIndex) != (bToIndex  bFromIndex) && Arrays.equals(a, 0, Math.min(aToIndex  aFromIndex, bToIndex  bFromIndex), b, 0, Math.min(aToIndex  aFromIndex, bToIndex  bFromIndex))
 Parameters:
a
 the first array to be tested for a mismatchaFromIndex
 the index (inclusive) of the first element in the first array to be testedaToIndex
 the index (exclusive) of the last element in the first array to be testedb
 the second array to be tested for a mismatchbFromIndex
 the index (inclusive) of the first element in the second array to be testedbToIndex
 the index (exclusive) of the last element in the second array to be tested Returns:
 the relative index of the first mismatch between the two arrays
over the specified ranges, otherwise
1
.  Throws:
IllegalArgumentException
 ifaFromIndex > aToIndex
or ifbFromIndex > bToIndex
ArrayIndexOutOfBoundsException
 ifaFromIndex < 0 or aToIndex > a.length
or ifbFromIndex < 0 or bToIndex > b.length
NullPointerException
 if either array isnull
 Since:
 9

mismatch
public static int mismatch(float[] a, float[] b)
Finds and returns the index of the first mismatch between twofloat
arrays, otherwise return 1 if no mismatch is found. The index will be in the range of 0 (inclusive) up to the length (inclusive) of the smaller array.If the two arrays share a common prefix then the returned index is the length of the common prefix and it follows that there is a mismatch between the two elements at that index within the respective arrays. If one array is a proper prefix of the other then the returned index is the length of the smaller array and it follows that the index is only valid for the larger array. Otherwise, there is no mismatch.
Two non
null
arrays,a
andb
, share a common prefix of lengthpl
if the following expression is true:
Note that a common prefix length ofpl >= 0 && pl < Math.min(a.length, b.length) && Arrays.equals(a, 0, pl, b, 0, pl) && Float.compare(a[pl], b[pl]) != 0
0
indicates that the first elements from each array mismatch.Two non
null
arrays,a
andb
, share a proper prefix if the following expression is true:a.length != b.length && Arrays.equals(a, 0, Math.min(a.length, b.length), b, 0, Math.min(a.length, b.length))
 Parameters:
a
 the first array to be tested for a mismatchb
 the second array to be tested for a mismatch Returns:
 the index of the first mismatch between the two arrays,
otherwise
1
.  Throws:
NullPointerException
 if either array isnull
 Since:
 9

mismatch
public static int mismatch(float[] a, int aFromIndex, int aToIndex, float[] b, int bFromIndex, int bToIndex)
Finds and returns the relative index of the first mismatch between twofloat
arrays over the specified ranges, otherwise return 1 if no mismatch is found. The index will be in the range of 0 (inclusive) up to the length (inclusive) of the smaller range.If the two arrays, over the specified ranges, share a common prefix then the returned relative index is the length of the common prefix and it follows that there is a mismatch between the two elements at that relative index within the respective arrays. If one array is a proper prefix of the other, over the specified ranges, then the returned relative index is the length of the smaller range and it follows that the relative index is only valid for the array with the larger range. Otherwise, there is no mismatch.
Two non
null
arrays,a
andb
with specified ranges [aFromIndex
,atoIndex
) and [bFromIndex
,btoIndex
) respectively, share a common prefix of lengthpl
if the following expression is true:
Note that a common prefix length ofpl >= 0 && pl < Math.min(aToIndex  aFromIndex, bToIndex  bFromIndex) && Arrays.equals(a, aFromIndex, aFromIndex + pl, b, bFromIndex, bFromIndex + pl) && Float.compare(a[aFromIndex + pl], b[bFromIndex + pl]) != 0
0
indicates that the first elements from each array mismatch.Two non
null
arrays,a
andb
with specified ranges [aFromIndex
,atoIndex
) and [bFromIndex
,btoIndex
) respectively, share a proper if the following expression is true:(aToIndex  aFromIndex) != (bToIndex  bFromIndex) && Arrays.equals(a, 0, Math.min(aToIndex  aFromIndex, bToIndex  bFromIndex), b, 0, Math.min(aToIndex  aFromIndex, bToIndex  bFromIndex))
 Parameters:
a
 the first array to be tested for a mismatchaFromIndex
 the index (inclusive) of the first element in the first array to be testedaToIndex
 the index (exclusive) of the last element in the first array to be testedb
 the second array to be tested for a mismatchbFromIndex
 the index (inclusive) of the first element in the second array to be testedbToIndex
 the index (exclusive) of the last element in the second array to be tested Returns:
 the relative index of the first mismatch between the two arrays
over the specified ranges, otherwise
1
.  Throws:
IllegalArgumentException
 ifaFromIndex > aToIndex
or ifbFromIndex > bToIndex
ArrayIndexOutOfBoundsException
 ifaFromIndex < 0 or aToIndex > a.length
or ifbFromIndex < 0 or bToIndex > b.length
NullPointerException
 if either array isnull
 Since:
 9

mismatch
public static int mismatch(double[] a, double[] b)
Finds and returns the index of the first mismatch between twodouble
arrays, otherwise return 1 if no mismatch is found. The index will be in the range of 0 (inclusive) up to the length (inclusive) of the smaller array.If the two arrays share a common prefix then the returned index is the length of the common prefix and it follows that there is a mismatch between the two elements at that index within the respective arrays. If one array is a proper prefix of the other then the returned index is the length of the smaller array and it follows that the index is only valid for the larger array. Otherwise, there is no mismatch.
Two non
null
arrays,a
andb
, share a common prefix of lengthpl
if the following expression is true:
Note that a common prefix length ofpl >= 0 && pl < Math.min(a.length, b.length) && Arrays.equals(a, 0, pl, b, 0, pl) && Double.compare(a[pl], b[pl]) != 0
0
indicates that the first elements from each array mismatch.Two non
null
arrays,a
andb
, share a proper prefix if the following expression is true:a.length != b.length && Arrays.equals(a, 0, Math.min(a.length, b.length), b, 0, Math.min(a.length, b.length))
 Parameters:
a
 the first array to be tested for a mismatchb
 the second array to be tested for a mismatch Returns:
 the index of the first mismatch between the two arrays,
otherwise
1
.  Throws:
NullPointerException
 if either array isnull
 Since:
 9

mismatch
public static int mismatch(double[] a, int aFromIndex, int aToIndex, double[] b, int bFromIndex, int bToIndex)
Finds and returns the relative index of the first mismatch between twodouble
arrays over the specified ranges, otherwise return 1 if no mismatch is found. The index will be in the range of 0 (inclusive) up to the length (inclusive) of the smaller range.If the two arrays, over the specified ranges, share a common prefix then the returned relative index is the length of the common prefix and it follows that there is a mismatch between the two elements at that relative index within the respective arrays. If one array is a proper prefix of the other, over the specified ranges, then the returned relative index is the length of the smaller range and it follows that the relative index is only valid for the array with the larger range. Otherwise, there is no mismatch.
Two non
null
arrays,a
andb
with specified ranges [aFromIndex
,atoIndex
) and [bFromIndex
,btoIndex
) respectively, share a common prefix of lengthpl
if the following expression is true:
Note that a common prefix length ofpl >= 0 && pl < Math.min(aToIndex  aFromIndex, bToIndex  bFromIndex) && Arrays.equals(a, aFromIndex, aFromIndex + pl, b, bFromIndex, bFromIndex + pl) && Double.compare(a[aFromIndex + pl], b[bFromIndex + pl]) != 0
0
indicates that the first elements from each array mismatch.Two non
null
arrays,a
andb
with specified ranges [aFromIndex
,atoIndex
) and [bFromIndex
,btoIndex
) respectively, share a proper if the following expression is true:(aToIndex  aFromIndex) != (bToIndex  bFromIndex) && Arrays.equals(a, 0, Math.min(aToIndex  aFromIndex, bToIndex  bFromIndex), b, 0, Math.min(aToIndex  aFromIndex, bToIndex  bFromIndex))
 Parameters:
a
 the first array to be tested for a mismatchaFromIndex
 the index (inclusive) of the first element in the first array to be testedaToIndex
 the index (exclusive) of the last element in the first array to be testedb
 the second array to be tested for a mismatchbFromIndex
 the index (inclusive) of the first element in the second array to be testedbToIndex
 the index (exclusive) of the last element in the second array to be tested Returns:
 the relative index of the first mismatch between the two arrays
over the specified ranges, otherwise
1
.  Throws:
IllegalArgumentException
 ifaFromIndex > aToIndex
or ifbFromIndex > bToIndex
ArrayIndexOutOfBoundsException
 ifaFromIndex < 0 or aToIndex > a.length
or ifbFromIndex < 0 or bToIndex > b.length
NullPointerException
 if either array isnull
 Since:
 9

mismatch
public static int mismatch(Object[] a, Object[] b)
Finds and returns the index of the first mismatch between twoObject
arrays, otherwise return 1 if no mismatch is found. The index will be in the range of 0 (inclusive) up to the length (inclusive) of the smaller array.If the two arrays share a common prefix then the returned index is the length of the common prefix and it follows that there is a mismatch between the two elements at that index within the respective arrays. If one array is a proper prefix of the other then the returned index is the length of the smaller array and it follows that the index is only valid for the larger array. Otherwise, there is no mismatch.
Two non
null
arrays,a
andb
, share a common prefix of lengthpl
if the following expression is true:
Note that a common prefix length ofpl >= 0 && pl < Math.min(a.length, b.length) && Arrays.equals(a, 0, pl, b, 0, pl) && !Objects.equals(a[pl], b[pl])
0
indicates that the first elements from each array mismatch.Two non
null
arrays,a
andb
, share a proper prefix if the following expression is true:a.length != b.length && Arrays.equals(a, 0, Math.min(a.length, b.length), b, 0, Math.min(a.length, b.length))
 Parameters:
a
 the first array to be tested for a mismatchb
 the second array to be tested for a mismatch Returns:
 the index of the first mismatch between the two arrays,
otherwise
1
.  Throws:
NullPointerException
 if either array isnull
 Since:
 9

mismatch
public static int mismatch(Object[] a, int aFromIndex, int aToIndex, Object[] b, int bFromIndex, int bToIndex)
Finds and returns the relative index of the first mismatch between twoObject
arrays over the specified ranges, otherwise return 1 if no mismatch is found. The index will be in the range of 0 (inclusive) up to the length (inclusive) of the smaller range.If the two arrays, over the specified ranges, share a common prefix then the returned relative index is the length of the common prefix and it follows that there is a mismatch between the two elements at that relative index within the respective arrays. If one array is a proper prefix of the other, over the specified ranges, then the returned relative index is the length of the smaller range and it follows that the relative index is only valid for the array with the larger range. Otherwise, there is no mismatch.
Two non
null
arrays,a
andb
with specified ranges [aFromIndex
,atoIndex
) and [bFromIndex
,btoIndex
) respectively, share a common prefix of lengthpl
if the following expression is true:
Note that a common prefix length ofpl >= 0 && pl < Math.min(aToIndex  aFromIndex, bToIndex  bFromIndex) && Arrays.equals(a, aFromIndex, aFromIndex + pl, b, bFromIndex, bFromIndex + pl) && !Objects.equals(a[aFromIndex + pl], b[bFromIndex + pl])
0
indicates that the first elements from each array mismatch.Two non
null
arrays,a
andb
with specified ranges [aFromIndex
,atoIndex
) and [bFromIndex
,btoIndex
) respectively, share a proper if the following expression is true:(aToIndex  aFromIndex) != (bToIndex  bFromIndex) && Arrays.equals(a, 0, Math.min(aToIndex  aFromIndex, bToIndex  bFromIndex), b, 0, Math.min(aToIndex  aFromIndex, bToIndex  bFromIndex))
 Parameters:
a
 the first array to be tested for a mismatchaFromIndex
 the index (inclusive) of the first element in the first array to be testedaToIndex
 the index (exclusive) of the last element in the first array to be testedb
 the second array to be tested for a mismatchbFromIndex
 the index (inclusive) of the first element in the second array to be testedbToIndex
 the index (exclusive) of the last element in the second array to be tested Returns:
 the relative index of the first mismatch between the two arrays
over the specified ranges, otherwise
1
.  Throws:
IllegalArgumentException
 ifaFromIndex > aToIndex
or ifbFromIndex > bToIndex
ArrayIndexOutOfBoundsException
 ifaFromIndex < 0 or aToIndex > a.length
or ifbFromIndex < 0 or bToIndex > b.length
NullPointerException
 if either array isnull
 Since:
 9

mismatch
public static <T> int mismatch(T[] a, T[] b, Comparator<? super T> cmp)
Finds and returns the index of the first mismatch between twoObject
arrays, otherwise return 1 if no mismatch is found. The index will be in the range of 0 (inclusive) up to the length (inclusive) of the smaller array.The specified comparator is used to determine if two array elements from the each array are not equal.
If the two arrays share a common prefix then the returned index is the length of the common prefix and it follows that there is a mismatch between the two elements at that index within the respective arrays. If one array is a proper prefix of the other then the returned index is the length of the smaller array and it follows that the index is only valid for the larger array. Otherwise, there is no mismatch.
Two non
null
arrays,a
andb
, share a common prefix of lengthpl
if the following expression is true:
Note that a common prefix length ofpl >= 0 && pl < Math.min(a.length, b.length) && Arrays.equals(a, 0, pl, b, 0, pl, cmp) cmp.compare(a[pl], b[pl]) != 0
0
indicates that the first elements from each array mismatch.Two non
null
arrays,a
andb
, share a proper prefix if the following expression is true:a.length != b.length && Arrays.equals(a, 0, Math.min(a.length, b.length), b, 0, Math.min(a.length, b.length), cmp)
 Type Parameters:
T
 the type of array elements Parameters:
a
 the first array to be tested for a mismatchb
 the second array to be tested for a mismatchcmp
 the comparator to compare array elements Returns:
 the index of the first mismatch between the two arrays,
otherwise
1
.  Throws:
NullPointerException
 if either array or the comparator isnull
 Since:
 9

mismatch
public static <T> int mismatch(T[] a, int aFromIndex, int aToIndex, T[] b, int bFromIndex, int bToIndex, Comparator<? super T> cmp)
Finds and returns the relative index of the first mismatch between twoObject
arrays over the specified ranges, otherwise return 1 if no mismatch is found. The index will be in the range of 0 (inclusive) up to the length (inclusive) of the smaller range.If the two arrays, over the specified ranges, share a common prefix then the returned relative index is the length of the common prefix and it follows that there is a mismatch between the two elements at that relative index within the respective arrays. If one array is a proper prefix of the other, over the specified ranges, then the returned relative index is the length of the smaller range and it follows that the relative index is only valid for the array with the larger range. Otherwise, there is no mismatch.
Two non
null
arrays,a
andb
with specified ranges [aFromIndex
,atoIndex
) and [bFromIndex
,btoIndex
) respectively, share a common prefix of lengthpl
if the following expression is true:
Note that a common prefix length ofpl >= 0 && pl < Math.min(aToIndex  aFromIndex, bToIndex  bFromIndex) && Arrays.equals(a, aFromIndex, aFromIndex + pl, b, bFromIndex, bFromIndex + pl, cmp) && cmp.compare(a[aFromIndex + pl], b[bFromIndex + pl]) != 0
0
indicates that the first elements from each array mismatch.Two non
null
arrays,a
andb
with specified ranges [aFromIndex
,atoIndex
) and [bFromIndex
,btoIndex
) respectively, share a proper if the following expression is true:(aToIndex  aFromIndex) != (bToIndex  bFromIndex) && Arrays.equals(a, 0, Math.min(aToIndex  aFromIndex, bToIndex  bFromIndex), b, 0, Math.min(aToIndex  aFromIndex, bToIndex  bFromIndex), cmp)
 Type Parameters:
T
 the type of array elements Parameters:
a
 the first array to be tested for a mismatchaFromIndex
 the index (inclusive) of the first element in the first array to be testedaToIndex
 the index (exclusive) of the last element in the first array to be testedb
 the second array to be tested for a mismatchbFromIndex
 the index (inclusive) of the first element in the second array to be testedbToIndex
 the index (exclusive) of the last element in the second array to be testedcmp
 the comparator to compare array elements Returns:
 the relative index of the first mismatch between the two arrays
over the specified ranges, otherwise
1
.  Throws:
IllegalArgumentException
 ifaFromIndex > aToIndex
or ifbFromIndex > bToIndex
ArrayIndexOutOfBoundsException
 ifaFromIndex < 0 or aToIndex > a.length
or ifbFromIndex < 0 or bToIndex > b.length
NullPointerException
 if either array or the comparator isnull
 Since:
 9

