8822 * The following are examples of lowercase characters:
8823 * <blockquote><pre>
8824 * a b c d e f g h i j k l m n o p q r s t u v w x y z
8825 * '\u00DF' '\u00E0' '\u00E1' '\u00E2' '\u00E3' '\u00E4' '\u00E5' '\u00E6'
8826 * '\u00E7' '\u00E8' '\u00E9' '\u00EA' '\u00EB' '\u00EC' '\u00ED' '\u00EE'
8827 * '\u00EF' '\u00F0' '\u00F1' '\u00F2' '\u00F3' '\u00F4' '\u00F5' '\u00F6'
8828 * '\u00F8' '\u00F9' '\u00FA' '\u00FB' '\u00FC' '\u00FD' '\u00FE' '\u00FF'
8829 * </pre></blockquote>
8830 * <p> Many other Unicode characters are lowercase too.
8831 *
8832 * @param codePoint the character (Unicode code point) to be tested.
8833 * @return {@code true} if the character is lowercase;
8834 * {@code false} otherwise.
8835 * @see Character#isLowerCase(int)
8836 * @see Character#isTitleCase(int)
8837 * @see Character#toLowerCase(int)
8838 * @see Character#getType(int)
8839 * @since 1.5
8840 */
8841 public static boolean isLowerCase(int codePoint) {
8842 return getType(codePoint) == Character.LOWERCASE_LETTER ||
8843 CharacterData.of(codePoint).isOtherLowercase(codePoint);
8844 }
8845
8846 /**
8847 * Determines if the specified character is an uppercase character.
8848 * <p>
8849 * A character is uppercase if its general category type, provided by
8850 * {@code Character.getType(ch)}, is {@code UPPERCASE_LETTER}.
8851 * or it has contributory property Other_Uppercase as defined by the Unicode Standard.
8852 * <p>
8853 * The following are examples of uppercase characters:
8854 * <blockquote><pre>
8855 * A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
8856 * '\u00C0' '\u00C1' '\u00C2' '\u00C3' '\u00C4' '\u00C5' '\u00C6' '\u00C7'
8857 * '\u00C8' '\u00C9' '\u00CA' '\u00CB' '\u00CC' '\u00CD' '\u00CE' '\u00CF'
8858 * '\u00D0' '\u00D1' '\u00D2' '\u00D3' '\u00D4' '\u00D5' '\u00D6' '\u00D8'
8859 * '\u00D9' '\u00DA' '\u00DB' '\u00DC' '\u00DD' '\u00DE'
8860 * </pre></blockquote>
8861 * <p> Many other Unicode characters are uppercase too.
8862 *
8888 * The following are examples of uppercase characters:
8889 * <blockquote><pre>
8890 * A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
8891 * '\u00C0' '\u00C1' '\u00C2' '\u00C3' '\u00C4' '\u00C5' '\u00C6' '\u00C7'
8892 * '\u00C8' '\u00C9' '\u00CA' '\u00CB' '\u00CC' '\u00CD' '\u00CE' '\u00CF'
8893 * '\u00D0' '\u00D1' '\u00D2' '\u00D3' '\u00D4' '\u00D5' '\u00D6' '\u00D8'
8894 * '\u00D9' '\u00DA' '\u00DB' '\u00DC' '\u00DD' '\u00DE'
8895 * </pre></blockquote>
8896 * <p> Many other Unicode characters are uppercase too.
8897 *
8898 * @param codePoint the character (Unicode code point) to be tested.
8899 * @return {@code true} if the character is uppercase;
8900 * {@code false} otherwise.
8901 * @see Character#isLowerCase(int)
8902 * @see Character#isTitleCase(int)
8903 * @see Character#toUpperCase(int)
8904 * @see Character#getType(int)
8905 * @since 1.5
8906 */
8907 public static boolean isUpperCase(int codePoint) {
8908 return getType(codePoint) == Character.UPPERCASE_LETTER ||
8909 CharacterData.of(codePoint).isOtherUppercase(codePoint);
8910 }
8911
8912 /**
8913 * Determines if the specified character is a titlecase character.
8914 * <p>
8915 * A character is a titlecase character if its general
8916 * category type, provided by {@code Character.getType(ch)},
8917 * is {@code TITLECASE_LETTER}.
8918 * <p>
8919 * Some characters look like pairs of Latin letters. For example, there
8920 * is an uppercase letter that looks like "LJ" and has a corresponding
8921 * lowercase letter that looks like "lj". A third form, which looks like "Lj",
8922 * is the appropriate form to use when rendering a word in lowercase
8923 * with initial capitals, as for a book title.
8924 * <p>
8925 * These are some of the Unicode characters for which this method returns
8926 * {@code true}:
8927 * <ul>
8928 * <li>{@code LATIN CAPITAL LETTER D WITH SMALL LETTER Z WITH CARON}
9039 * <li>{@code '\u005Cu0660'} through {@code '\u005Cu0669'},
9040 * Arabic-Indic digits
9041 * <li>{@code '\u005Cu06F0'} through {@code '\u005Cu06F9'},
9042 * Extended Arabic-Indic digits
9043 * <li>{@code '\u005Cu0966'} through {@code '\u005Cu096F'},
9044 * Devanagari digits
9045 * <li>{@code '\u005CuFF10'} through {@code '\u005CuFF19'},
9046 * Fullwidth digits
9047 * </ul>
9048 *
9049 * Many other character ranges contain digits as well.
9050 *
9051 * @param codePoint the character (Unicode code point) to be tested.
9052 * @return {@code true} if the character is a digit;
9053 * {@code false} otherwise.
9054 * @see Character#forDigit(int, int)
9055 * @see Character#getType(int)
9056 * @since 1.5
9057 */
9058 public static boolean isDigit(int codePoint) {
9059 return getType(codePoint) == Character.DECIMAL_DIGIT_NUMBER;
9060 }
9061
9062 /**
9063 * Determines if a character is defined in Unicode.
9064 * <p>
9065 * A character is defined if at least one of the following is true:
9066 * <ul>
9067 * <li>It has an entry in the UnicodeData file.
9068 * <li>It has a value in a range defined by the UnicodeData file.
9069 * </ul>
9070 *
9071 * <p><b>Note:</b> This method cannot handle <a
9072 * href="#supplementary"> supplementary characters</a>. To support
9073 * all Unicode characters, including supplementary characters, use
9074 * the {@link #isDefined(int)} method.
9075 *
9076 * @param ch the character to be tested
9077 * @return {@code true} if the character has a defined meaning
9078 * in Unicode; {@code false} otherwise.
9079 * @see Character#isDigit(char)
|
8822 * The following are examples of lowercase characters:
8823 * <blockquote><pre>
8824 * a b c d e f g h i j k l m n o p q r s t u v w x y z
8825 * '\u00DF' '\u00E0' '\u00E1' '\u00E2' '\u00E3' '\u00E4' '\u00E5' '\u00E6'
8826 * '\u00E7' '\u00E8' '\u00E9' '\u00EA' '\u00EB' '\u00EC' '\u00ED' '\u00EE'
8827 * '\u00EF' '\u00F0' '\u00F1' '\u00F2' '\u00F3' '\u00F4' '\u00F5' '\u00F6'
8828 * '\u00F8' '\u00F9' '\u00FA' '\u00FB' '\u00FC' '\u00FD' '\u00FE' '\u00FF'
8829 * </pre></blockquote>
8830 * <p> Many other Unicode characters are lowercase too.
8831 *
8832 * @param codePoint the character (Unicode code point) to be tested.
8833 * @return {@code true} if the character is lowercase;
8834 * {@code false} otherwise.
8835 * @see Character#isLowerCase(int)
8836 * @see Character#isTitleCase(int)
8837 * @see Character#toLowerCase(int)
8838 * @see Character#getType(int)
8839 * @since 1.5
8840 */
8841 public static boolean isLowerCase(int codePoint) {
8842 return CharacterData.of(codePoint).isLowerCase(codePoint) ||
8843 CharacterData.of(codePoint).isOtherLowercase(codePoint);
8844 }
8845
8846 /**
8847 * Determines if the specified character is an uppercase character.
8848 * <p>
8849 * A character is uppercase if its general category type, provided by
8850 * {@code Character.getType(ch)}, is {@code UPPERCASE_LETTER}.
8851 * or it has contributory property Other_Uppercase as defined by the Unicode Standard.
8852 * <p>
8853 * The following are examples of uppercase characters:
8854 * <blockquote><pre>
8855 * A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
8856 * '\u00C0' '\u00C1' '\u00C2' '\u00C3' '\u00C4' '\u00C5' '\u00C6' '\u00C7'
8857 * '\u00C8' '\u00C9' '\u00CA' '\u00CB' '\u00CC' '\u00CD' '\u00CE' '\u00CF'
8858 * '\u00D0' '\u00D1' '\u00D2' '\u00D3' '\u00D4' '\u00D5' '\u00D6' '\u00D8'
8859 * '\u00D9' '\u00DA' '\u00DB' '\u00DC' '\u00DD' '\u00DE'
8860 * </pre></blockquote>
8861 * <p> Many other Unicode characters are uppercase too.
8862 *
8888 * The following are examples of uppercase characters:
8889 * <blockquote><pre>
8890 * A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
8891 * '\u00C0' '\u00C1' '\u00C2' '\u00C3' '\u00C4' '\u00C5' '\u00C6' '\u00C7'
8892 * '\u00C8' '\u00C9' '\u00CA' '\u00CB' '\u00CC' '\u00CD' '\u00CE' '\u00CF'
8893 * '\u00D0' '\u00D1' '\u00D2' '\u00D3' '\u00D4' '\u00D5' '\u00D6' '\u00D8'
8894 * '\u00D9' '\u00DA' '\u00DB' '\u00DC' '\u00DD' '\u00DE'
8895 * </pre></blockquote>
8896 * <p> Many other Unicode characters are uppercase too.
8897 *
8898 * @param codePoint the character (Unicode code point) to be tested.
8899 * @return {@code true} if the character is uppercase;
8900 * {@code false} otherwise.
8901 * @see Character#isLowerCase(int)
8902 * @see Character#isTitleCase(int)
8903 * @see Character#toUpperCase(int)
8904 * @see Character#getType(int)
8905 * @since 1.5
8906 */
8907 public static boolean isUpperCase(int codePoint) {
8908 return CharacterData.of(codePoint).isUpperCase(codePoint) ||
8909 CharacterData.of(codePoint).isOtherUppercase(codePoint);
8910 }
8911
8912 /**
8913 * Determines if the specified character is a titlecase character.
8914 * <p>
8915 * A character is a titlecase character if its general
8916 * category type, provided by {@code Character.getType(ch)},
8917 * is {@code TITLECASE_LETTER}.
8918 * <p>
8919 * Some characters look like pairs of Latin letters. For example, there
8920 * is an uppercase letter that looks like "LJ" and has a corresponding
8921 * lowercase letter that looks like "lj". A third form, which looks like "Lj",
8922 * is the appropriate form to use when rendering a word in lowercase
8923 * with initial capitals, as for a book title.
8924 * <p>
8925 * These are some of the Unicode characters for which this method returns
8926 * {@code true}:
8927 * <ul>
8928 * <li>{@code LATIN CAPITAL LETTER D WITH SMALL LETTER Z WITH CARON}
9039 * <li>{@code '\u005Cu0660'} through {@code '\u005Cu0669'},
9040 * Arabic-Indic digits
9041 * <li>{@code '\u005Cu06F0'} through {@code '\u005Cu06F9'},
9042 * Extended Arabic-Indic digits
9043 * <li>{@code '\u005Cu0966'} through {@code '\u005Cu096F'},
9044 * Devanagari digits
9045 * <li>{@code '\u005CuFF10'} through {@code '\u005CuFF19'},
9046 * Fullwidth digits
9047 * </ul>
9048 *
9049 * Many other character ranges contain digits as well.
9050 *
9051 * @param codePoint the character (Unicode code point) to be tested.
9052 * @return {@code true} if the character is a digit;
9053 * {@code false} otherwise.
9054 * @see Character#forDigit(int, int)
9055 * @see Character#getType(int)
9056 * @since 1.5
9057 */
9058 public static boolean isDigit(int codePoint) {
9059 return CharacterData.of(codePoint).isDigit(codePoint);
9060 }
9061
9062 /**
9063 * Determines if a character is defined in Unicode.
9064 * <p>
9065 * A character is defined if at least one of the following is true:
9066 * <ul>
9067 * <li>It has an entry in the UnicodeData file.
9068 * <li>It has a value in a range defined by the UnicodeData file.
9069 * </ul>
9070 *
9071 * <p><b>Note:</b> This method cannot handle <a
9072 * href="#supplementary"> supplementary characters</a>. To support
9073 * all Unicode characters, including supplementary characters, use
9074 * the {@link #isDefined(int)} method.
9075 *
9076 * @param ch the character to be tested
9077 * @return {@code true} if the character has a defined meaning
9078 * in Unicode; {@code false} otherwise.
9079 * @see Character#isDigit(char)
|