Package | Description |
---|---|
java.util |
Contains the collections framework, legacy collection classes,
event model, date and time facilities, internationalization, and
miscellaneous utility classes (a string tokenizer, a random-number
generator, and a bit array).
|
java.util.concurrent |
Utility classes commonly useful in concurrent programming.
|
java.util.concurrent.atomic |
A small toolkit of classes that support lock-free thread-safe
programming on single variables.
|
java.util.stream |
Classes to support functional-style operations on streams of elements, such
as map-reduce transformations on collections.
|
Modifier and Type | Method | Description |
---|---|---|
static void |
Arrays.parallelPrefix(long[] array,
int fromIndex,
int toIndex,
LongBinaryOperator op) |
Performs
Arrays.parallelPrefix(long[], LongBinaryOperator)
for the given subrange of the array. |
static void |
Arrays.parallelPrefix(long[] array,
LongBinaryOperator op) |
Cumulates, in parallel, each element of the given array in place,
using the supplied function.
|
Modifier and Type | Method | Description |
---|---|---|
long |
ConcurrentHashMap.reduceEntriesToLong(long parallelismThreshold,
ToLongFunction<Map.Entry<K,V>> transformer,
long basis,
LongBinaryOperator reducer) |
Returns the result of accumulating the given transformation
of all entries using the given reducer to combine values,
and the given basis as an identity value.
|
long |
ConcurrentHashMap.reduceKeysToLong(long parallelismThreshold,
ToLongFunction<? super K> transformer,
long basis,
LongBinaryOperator reducer) |
Returns the result of accumulating the given transformation
of all keys using the given reducer to combine values, and
the given basis as an identity value.
|
long |
ConcurrentHashMap.reduceToLong(long parallelismThreshold,
ToLongBiFunction<? super K,? super V> transformer,
long basis,
LongBinaryOperator reducer) |
Returns the result of accumulating the given transformation
of all (key, value) pairs using the given reducer to
combine values, and the given basis as an identity value.
|
long |
ConcurrentHashMap.reduceValuesToLong(long parallelismThreshold,
ToLongFunction<? super V> transformer,
long basis,
LongBinaryOperator reducer) |
Returns the result of accumulating the given transformation
of all values using the given reducer to combine values,
and the given basis as an identity value.
|
Modifier and Type | Method | Description |
---|---|---|
long |
AtomicLong.accumulateAndGet(long x,
LongBinaryOperator accumulatorFunction) |
Atomically updates the current value with the results of
applying the given function to the current and given values,
returning the updated value.
|
long |
AtomicLongArray.accumulateAndGet(int i,
long x,
LongBinaryOperator accumulatorFunction) |
Atomically updates the element at index
i with the
results of applying the given function to the current and given
values, returning the updated value. |
long |
AtomicLongFieldUpdater.accumulateAndGet(T obj,
long x,
LongBinaryOperator accumulatorFunction) |
Atomically updates the field of the given object managed by this
updater with the results of applying the given function to the
current and given values, returning the updated value.
|
long |
AtomicLong.getAndAccumulate(long x,
LongBinaryOperator accumulatorFunction) |
Atomically updates the current value with the results of
applying the given function to the current and given values,
returning the previous value.
|
long |
AtomicLongArray.getAndAccumulate(int i,
long x,
LongBinaryOperator accumulatorFunction) |
Atomically updates the element at index
i with the
results of applying the given function to the current and given
values, returning the previous value. |
long |
AtomicLongFieldUpdater.getAndAccumulate(T obj,
long x,
LongBinaryOperator accumulatorFunction) |
Atomically updates the field of the given object managed by this
updater with the results of applying the given function to the
current and given values, returning the previous value.
|
Constructor | Description |
---|---|
LongAccumulator(LongBinaryOperator accumulatorFunction,
long identity) |
Creates a new instance using the given accumulator function
and identity element.
|
Modifier and Type | Method | Description |
---|---|---|
long |
LongStream.reduce(long identity,
LongBinaryOperator op) |
Performs a reduction on the
elements of this stream, using the provided identity value and an
associative
accumulation function, and returns the reduced value.
|
OptionalLong |
LongStream.reduce(LongBinaryOperator op) |
Performs a reduction on the
elements of this stream, using an
associative accumulation
function, and returns an
OptionalLong describing the reduced value,
if any. |
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For further API reference and developer documentation, see Java SE Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.
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DRAFT 9-internal+0-adhoc.mlchung.jdk9-jdeps