java.lang

Class Character

java.lang.Object
- java.lang.Character

Implemented Interfaces:: Comparable<T>, Serializable

public final class Character

extends Object

implements Serializable, Comparable<T>

Wrapper class for the primitive char data type. In addition, this class allows one to retrieve property information and perform transformations on the defined characters in the Unicode Standard, Version 4.0.0. java.lang.Character is designed to be very dynamic, and as such, it retrieves information on the Unicode character set from a separate database, gnu.java.lang.CharData, which can be easily upgraded.

For predicates, boundaries are used to describe the set of characters for which the method will return true. This syntax uses fairly normal regular expression notation. See 5.13 of the Unicode Standard, Version 4.0, for the boundary specification.

See http://www.unicode.org for more information on the Unicode Standard.

Since:: 1.0

See Also:: CharData, Serialized Form

Nested Class Summary
`static class`	`Character.Subset` A subset of Unicode blocks.
`static class`	`Character.UnicodeBlock` A family of character subsets in the Unicode specification.

Field Summary
`static byte`	`COMBINING_SPACING_MARK` Mc = Mark, Spacing Combining (Normative).
`static byte`	`CONNECTOR_PUNCTUATION` Pc = Punctuation, Connector (Informative).
`static byte`	`CONTROL` Cc = Other, Control (Normative).
`static byte`	`CURRENCY_SYMBOL` Sc = Symbol, Currency (Informative).
`static byte`	`DASH_PUNCTUATION` Pd = Punctuation, Dash (Informative).
`static byte`	`DECIMAL_DIGIT_NUMBER` Nd = Number, Decimal Digit (Normative).
`static byte`	`DIRECTIONALITY_ARABIC_NUMBER` Weak bidirectional character type "AN".
`static byte`	`DIRECTIONALITY_BOUNDARY_NEUTRAL` Weak bidirectional character type "BN".
`static byte`	`DIRECTIONALITY_COMMON_NUMBER_SEPARATOR` Weak bidirectional character type "CS".
`static byte`	`DIRECTIONALITY_EUROPEAN_NUMBER` Weak bidirectional character type "EN".
`static byte`	`DIRECTIONALITY_EUROPEAN_NUMBER_SEPARATOR` Weak bidirectional character type "ES".
`static byte`	`DIRECTIONALITY_EUROPEAN_NUMBER_TERMINATOR` Weak bidirectional character type "ET".
`static byte`	`DIRECTIONALITY_LEFT_TO_RIGHT` Strong bidirectional character type "L".
`static byte`	`DIRECTIONALITY_LEFT_TO_RIGHT_EMBEDDING` Strong bidirectional character type "LRE".
`static byte`	`DIRECTIONALITY_LEFT_TO_RIGHT_OVERRIDE` Strong bidirectional character type "LRO".
`static byte`	`DIRECTIONALITY_NONSPACING_MARK` Weak bidirectional character type "NSM".
`static byte`	`DIRECTIONALITY_OTHER_NEUTRALS` Neutral bidirectional character type "ON".
`static byte`	`DIRECTIONALITY_PARAGRAPH_SEPARATOR` Neutral bidirectional character type "B".
`static byte`	`DIRECTIONALITY_POP_DIRECTIONAL_FORMAT` Weak bidirectional character type "PDF".
`static byte`	`DIRECTIONALITY_RIGHT_TO_LEFT` Strong bidirectional character type "R".
`static byte`	`DIRECTIONALITY_RIGHT_TO_LEFT_ARABIC` Strong bidirectional character type "AL".
`static byte`	`DIRECTIONALITY_RIGHT_TO_LEFT_EMBEDDING` Strong bidirectional character type "RLE".
`static byte`	`DIRECTIONALITY_RIGHT_TO_LEFT_OVERRIDE` Strong bidirectional character type "RLO".
`static byte`	`DIRECTIONALITY_SEGMENT_SEPARATOR` Neutral bidirectional character type "S".
`static byte`	`DIRECTIONALITY_UNDEFINED` Undefined bidirectional character type.
`static byte`	`DIRECTIONALITY_WHITESPACE` Strong bidirectional character type "WS".
`static byte`	`ENCLOSING_MARK` Me = Mark, Enclosing (Normative).
`static byte`	`END_PUNCTUATION` Pe = Punctuation, Close (Informative).
`static byte`	`FINAL_QUOTE_PUNCTUATION` Pf = Punctuation, Final Quote (Informative).
`static byte`	`FORMAT` Cf = Other, Format (Normative).
`static byte`	`INITIAL_QUOTE_PUNCTUATION` Pi = Punctuation, Initial Quote (Informative).
`static byte`	`LETTER_NUMBER` Nl = Number, Letter (Normative).
`static byte`	`LINE_SEPARATOR` Zl = Separator, Line (Normative).
`static byte`	`LOWERCASE_LETTER` Ll = Letter, Lowercase (Informative).
`static byte`	`MATH_SYMBOL` Sm = Symbol, Math (Informative).
`static int`	`MAX_CODE_POINT` The maximum Unicode 4.0 code point, which is greater than the range of the char data type.
`static char`	`MAX_HIGH_SURROGATE` The maximum Unicode high surrogate code unit, or leading-surrogate, in the UTF-16 character encoding.
`static char`	`MAX_LOW_SURROGATE` The maximum Unicode low surrogate code unit, or trailing-surrogate, in the UTF-16 character encoding.
`static int`	`MAX_RADIX` Largest value allowed for radix arguments in Java.
`static char`	`MAX_SURROGATE` The maximum Unicode surrogate code unit in the UTF-16 character encoding.
`static char`	`MAX_VALUE` The maximum value the char data type can hold.
`static int`	`MIN_CODE_POINT` The minimum Unicode 4.0 code point.
`static char`	`MIN_HIGH_SURROGATE` The minimum Unicode high surrogate code unit, or leading-surrogate, in the UTF-16 character encoding.
`static char`	`MIN_LOW_SURROGATE` The minimum Unicode low surrogate code unit, or trailing-surrogate, in the UTF-16 character encoding.
`static int`	`MIN_RADIX` Smallest value allowed for radix arguments in Java.
`static int`	`MIN_SUPPLEMENTARY_CODE_POINT` The lowest possible supplementary Unicode code point (the first code point outside the basic multilingual plane (BMP)).
`static char`	`MIN_SURROGATE` The minimum Unicode surrogate code unit in the UTF-16 character encoding.
`static char`	`MIN_VALUE` The minimum value the char data type can hold.
`static byte`	`MODIFIER_LETTER` Lm = Letter, Modifier (Informative).
`static byte`	`MODIFIER_SYMBOL` Sk = Symbol, Modifier (Informative).
`static byte`	`NON_SPACING_MARK` Mn = Mark, Non-Spacing (Normative).
`static byte`	`OTHER_LETTER` Lo = Letter, Other (Informative).
`static byte`	`OTHER_NUMBER` No = Number, Other (Normative).
`static byte`	`OTHER_PUNCTUATION` Po = Punctuation, Other (Informative).
`static byte`	`OTHER_SYMBOL` So = Symbol, Other (Informative).
`static byte`	`PARAGRAPH_SEPARATOR` Zp = Separator, Paragraph (Normative).
`static byte`	`PRIVATE_USE` Co = Other, Private Use (Normative).
`static int`	`SIZE` The number of bits needed to represent a `char`.
`static byte`	`SPACE_SEPARATOR` Zs = Separator, Space (Normative).
`static byte`	`START_PUNCTUATION` Ps = Punctuation, Open (Informative).
`static byte`	`SURROGATE` Cs = Other, Surrogate (Normative).
`static byte`	`TITLECASE_LETTER` Lt = Letter, Titlecase (Informative).
`static Class`	`TYPE` Class object representing the primitive char data type.
`static byte`	`UNASSIGNED` Cn = Other, Not Assigned (Normative).
`static byte`	`UPPERCASE_LETTER` Lu = Letter, Uppercase (Informative).

Constructor Summary
`Character(char value)` Wraps up a character.

Method Summary
`static int`	`charCount(int codePoint)` Return number of 16-bit characters required to represent the given code point.
`char`	`charValue()` Returns the character which has been wrapped by this class.
`static int`	`codePointAt(char[] chars, int index)` Get the code point at the specified index in the CharSequence.
`static int`	`codePointAt(char[] chars, int index, int limit)` Get the code point at the specified index in the CharSequence.
`static int`	`codePointAt(CharSequence sequence, int index)` Get the code point at the specified index in the CharSequence.
`static int`	`codePointBefore(char[] chars, int index)` Get the code point before the specified index.
`static int`	`codePointBefore(char[] chars, int index, int start)` Get the code point before the specified index.
`static int`	`codePointBefore(CharSequence sequence, int index)` Get the code point before the specified index.
`static int`	`codePointCount(char[] a, int offset, int count)` Returns the number of Unicode code points in the specified range of the given char array.
`static int`	`codePointCount(CharSequence seq, int beginIndex, int endIndex)` Returns the number of Unicode code points in the specified range of the given CharSequence.
`int`	`compareTo(Character anotherCharacter)` Compares another Character to this Character, numerically.
`static int`	`digit(char ch, int radix)` Converts a character into a digit of the specified radix.
`static int`	`digit(int codePoint, int radix)` Converts a character into a digit of the specified radix.
`boolean`	`equals(Object o)` Determines if an object is equal to this object.
`static char`	`forDigit(int digit, int radix)` Converts a digit into a character which represents that digit in a specified radix.
`static byte`	`getDirectionality(char ch)` Returns the Unicode directionality property of the character.
`static byte`	`getDirectionality(int codePoint)` Returns the Unicode directionality property of the character.
`static int`	`getNumericValue(char ch)` Returns the Unicode numeric value property of a character.
`static int`	`getNumericValue(int codePoint)` Returns the Unicode numeric value property of a character.
`static int`	`getType(char ch)` Returns the Unicode general category property of a character.
`static int`	`getType(int codePoint)` Returns the Unicode general category property of a character.
`int`	`hashCode()` Returns the numerical value (unsigned) of the wrapped character.
`static boolean`	`isDefined(char ch)` Determines if a character is part of the Unicode Standard.
`static boolean`	`isDefined(int codePoint)` Determines if a character is part of the Unicode Standard.
`static boolean`	`isDigit(char ch)` Determines if a character is a Unicode decimal digit.
`static boolean`	`isDigit(int codePoint)` Determines if a character is a Unicode decimal digit.
`static boolean`	`isHighSurrogate(char ch)` Return true if the given character is a high surrogate.
`static boolean`	`isISOControl(char ch)` Determines if a character has the ISO Control property.
`static boolean`	`isISOControl(int codePoint)` Determines if the character is an ISO Control character.
`static boolean`	`isIdentifierIgnorable(char ch)` Determines if a character is ignorable in a Unicode identifier.
`static boolean`	`isIdentifierIgnorable(int codePoint)` Determines if a character is ignorable in a Unicode identifier.
`static boolean`	`isJavaIdentifierPart(char ch)` Determines if a character can follow the first letter in a Java identifier.
`static boolean`	`isJavaIdentifierPart(int codePoint)` Determines if a character can follow the first letter in a Java identifier.
`static boolean`	`isJavaIdentifierStart(char ch)` Determines if a character can start a Java identifier.
`static boolean`	`isJavaIdentifierStart(int codePoint)` Determines if a character can start a Java identifier.
`static boolean`	`isJavaLetter(char ch)` Deprecated. Replaced by `isJavaIdentifierStart(char)`
`static boolean`	`isJavaLetterOrDigit(char ch)` Deprecated. Replaced by `isJavaIdentifierPart(char)`
`static boolean`	`isLetter(char ch)` Determines if a character is a Unicode letter.
`static boolean`	`isLetter(int codePoint)` Determines if a character is a Unicode letter.
`static boolean`	`isLetterOrDigit(char ch)` Determines if a character is a Unicode letter or a Unicode digit.
`static boolean`	`isLetterOrDigit(int codePoint)` Determines if a character is a Unicode letter or a Unicode digit.
`static boolean`	`isLowSurrogate(char ch)` Return true if the given character is a low surrogate.
`static boolean`	`isLowerCase(char ch)` Determines if a character is a Unicode lowercase letter.
`static boolean`	`isLowerCase(int codePoint)` Determines if a character is a Unicode lowercase letter.
`static boolean`	`isMirrored(char ch)` Determines whether the character is mirrored according to Unicode.
`static boolean`	`isMirrored(int codePoint)` Determines whether the character is mirrored according to Unicode.
`static boolean`	`isSpace(char ch)` Deprecated. Replaced by `isWhitespace(char)`
`static boolean`	`isSpaceChar(char ch)` Determines if a character is a Unicode space character.
`static boolean`	`isSpaceChar(int codePoint)` Determines if a character is a Unicode space character.
`static boolean`	`isSupplementaryCodePoint(int codePoint)` Determines whether the specified code point is in the range 0x10000 ..
`static boolean`	`isSurrogatePair(char ch1, char ch2)` Return true if the given characters compose a surrogate pair.
`static boolean`	`isTitleCase(char ch)` Determines if a character is a Unicode titlecase letter.
`static boolean`	`isTitleCase(int codePoint)` Determines if a character is a Unicode titlecase letter.
`static boolean`	`isUnicodeIdentifierPart(char ch)` Determines if a character can follow the first letter in a Unicode identifier.
`static boolean`	`isUnicodeIdentifierPart(int codePoint)` Determines if a character can follow the first letter in a Unicode identifier.
`static boolean`	`isUnicodeIdentifierStart(char ch)` Determines if a character can start a Unicode identifier.
`static boolean`	`isUnicodeIdentifierStart(int codePoint)` Determines if a character can start a Unicode identifier.
`static boolean`	`isUpperCase(char ch)` Determines if a character is a Unicode uppercase letter.
`static boolean`	`isUpperCase(int codePoint)` Determines if a character is a Unicode uppercase letter.
`static boolean`	`isValidCodePoint(int codePoint)` Determines whether the specified code point is in the range 0x0000 ..
`static boolean`	`isWhitespace(char ch)` Determines if a character is Java whitespace.
`static boolean`	`isWhitespace(int codePoint)` Determines if a character is Java whitespace.
`static int`	`offsetByCodePoints(char[] a, int start, int count, int index, int codePointOffset)` Returns the index into the given char subarray that is offset `codePointOffset` code points from `index`.
`static int`	`offsetByCodePoints(CharSequence seq, int index, int codePointOffset)` Returns the index into the given CharSequence that is offset `codePointOffset` code points from `index`.
`static char`	`reverseBytes(char val)` Reverse the bytes in val.
`static char[]`	`toChars(int codePoint)` Converts a unicode code point to a UTF-16 representation of that code point.
`static int`	`toChars(int codePoint, char[] dst, int dstIndex)` Converts a unicode code point to its UTF-16 representation.
`static int`	`toCodePoint(char high, char low)` Given a valid surrogate pair, this returns the corresponding code point.
`static char`	`toLowerCase(char ch)` Converts a Unicode character into its lowercase equivalent mapping.
`static int`	`toLowerCase(int codePoint)` Converts a Unicode character into its lowercase equivalent mapping.
`String`	`toString()` Converts the wrapped character into a String.
`static String`	`toString(char ch)` Returns a String of length 1 representing the specified character.
`static char`	`toTitleCase(char ch)` Converts a Unicode character into its titlecase equivalent mapping.
`static int`	`toTitleCase(int codePoint)` Converts a Unicode character into its titlecase equivalent mapping.
`static char`	`toUpperCase(char ch)` Converts a Unicode character into its uppercase equivalent mapping.
`static int`	`toUpperCase(int codePoint)` Converts a Unicode character into its uppercase equivalent mapping.
`static Character`	`valueOf(char val)` Returns an `Character` object wrapping the value.

Methods inherited from class java.lang.Object
`clone`, `equals`, `extends Object> getClass`, `finalize`, `hashCode`, `notify`, `notifyAll`, `toString`, `wait`, `wait`, `wait`

COMBINING_SPACING_MARK

public static final byte COMBINING_SPACING_MARK

Mc = Mark, Spacing Combining (Normative).
Field Value:
8
Since:
1.1

CONNECTOR_PUNCTUATION

public static final byte CONNECTOR_PUNCTUATION

Pc = Punctuation, Connector (Informative).
Field Value:
23
Since:
1.1

CONTROL

public static final byte CONTROL

Cc = Other, Control (Normative).
Field Value:
15
Since:
1.1

CURRENCY_SYMBOL

public static final byte CURRENCY_SYMBOL

Sc = Symbol, Currency (Informative).
Field Value:
26
Since:
1.1

DASH_PUNCTUATION

public static final byte DASH_PUNCTUATION

Pd = Punctuation, Dash (Informative).
Field Value:
20
Since:
1.1

DECIMAL_DIGIT_NUMBER

public static final byte DECIMAL_DIGIT_NUMBER

Nd = Number, Decimal Digit (Normative).
Field Value:
9
Since:
1.1

DIRECTIONALITY_ARABIC_NUMBER

public static final byte DIRECTIONALITY_ARABIC_NUMBER

Weak bidirectional character type "AN".
Field Value:
6
Since:
1.4

DIRECTIONALITY_BOUNDARY_NEUTRAL

public static final byte DIRECTIONALITY_BOUNDARY_NEUTRAL

Weak bidirectional character type "BN".
Field Value:
9
Since:
1.4

DIRECTIONALITY_COMMON_NUMBER_SEPARATOR

public static final byte DIRECTIONALITY_COMMON_NUMBER_SEPARATOR

Weak bidirectional character type "CS".
Field Value:
7
Since:
1.4

DIRECTIONALITY_EUROPEAN_NUMBER

public static final byte DIRECTIONALITY_EUROPEAN_NUMBER

Weak bidirectional character type "EN".
Field Value:
3
Since:
1.4

DIRECTIONALITY_EUROPEAN_NUMBER_SEPARATOR

public static final byte DIRECTIONALITY_EUROPEAN_NUMBER_SEPARATOR

Weak bidirectional character type "ES".
Field Value:
4
Since:
1.4

DIRECTIONALITY_EUROPEAN_NUMBER_TERMINATOR

public static final byte DIRECTIONALITY_EUROPEAN_NUMBER_TERMINATOR

Weak bidirectional character type "ET".
Field Value:
5
Since:
1.4

DIRECTIONALITY_LEFT_TO_RIGHT

public static final byte DIRECTIONALITY_LEFT_TO_RIGHT

Strong bidirectional character type "L".
Field Value:
0
Since:
1.4

DIRECTIONALITY_LEFT_TO_RIGHT_EMBEDDING

public static final byte DIRECTIONALITY_LEFT_TO_RIGHT_EMBEDDING

Strong bidirectional character type "LRE".
Field Value:
14
Since:
1.4

DIRECTIONALITY_LEFT_TO_RIGHT_OVERRIDE

public static final byte DIRECTIONALITY_LEFT_TO_RIGHT_OVERRIDE

Strong bidirectional character type "LRO".
Field Value:
15
Since:
1.4

DIRECTIONALITY_NONSPACING_MARK

public static final byte DIRECTIONALITY_NONSPACING_MARK

Weak bidirectional character type "NSM".
Field Value:
8
Since:
1.4

DIRECTIONALITY_OTHER_NEUTRALS

public static final byte DIRECTIONALITY_OTHER_NEUTRALS

Neutral bidirectional character type "ON".
Field Value:
13
Since:
1.4

DIRECTIONALITY_PARAGRAPH_SEPARATOR

public static final byte DIRECTIONALITY_PARAGRAPH_SEPARATOR

Neutral bidirectional character type "B".
Field Value:
10
Since:
1.4

DIRECTIONALITY_POP_DIRECTIONAL_FORMAT

public static final byte DIRECTIONALITY_POP_DIRECTIONAL_FORMAT

Weak bidirectional character type "PDF".
Field Value:
18
Since:
1.4

DIRECTIONALITY_RIGHT_TO_LEFT

public static final byte DIRECTIONALITY_RIGHT_TO_LEFT

Strong bidirectional character type "R".
Field Value:
1
Since:
1.4

DIRECTIONALITY_RIGHT_TO_LEFT_ARABIC

public static final byte DIRECTIONALITY_RIGHT_TO_LEFT_ARABIC

Strong bidirectional character type "AL".
Field Value:
2
Since:
1.4

DIRECTIONALITY_RIGHT_TO_LEFT_EMBEDDING

public static final byte DIRECTIONALITY_RIGHT_TO_LEFT_EMBEDDING

Strong bidirectional character type "RLE".
Field Value:
16
Since:
1.4

DIRECTIONALITY_RIGHT_TO_LEFT_OVERRIDE

public static final byte DIRECTIONALITY_RIGHT_TO_LEFT_OVERRIDE

Strong bidirectional character type "RLO".
Field Value:
17
Since:
1.4

DIRECTIONALITY_SEGMENT_SEPARATOR

public static final byte DIRECTIONALITY_SEGMENT_SEPARATOR

Neutral bidirectional character type "S".
Field Value:
11
Since:
1.4

DIRECTIONALITY_UNDEFINED

public static final byte DIRECTIONALITY_UNDEFINED

Undefined bidirectional character type. Undefined char values have undefined directionality in the Unicode specification.
Field Value:
-1
Since:
1.4

DIRECTIONALITY_WHITESPACE

public static final byte DIRECTIONALITY_WHITESPACE

Strong bidirectional character type "WS".
Field Value:
12
Since:
1.4

ENCLOSING_MARK

public static final byte ENCLOSING_MARK

Me = Mark, Enclosing (Normative).
Field Value:
7
Since:
1.1

END_PUNCTUATION

public static final byte END_PUNCTUATION

Pe = Punctuation, Close (Informative).
Field Value:
22
Since:
1.1

FINAL_QUOTE_PUNCTUATION

public static final byte FINAL_QUOTE_PUNCTUATION

Pf = Punctuation, Final Quote (Informative).
Field Value:
30
Since:
1.4

FORMAT

public static final byte FORMAT

Cf = Other, Format (Normative).
Field Value:
16
Since:
1.1

INITIAL_QUOTE_PUNCTUATION

public static final byte INITIAL_QUOTE_PUNCTUATION

Pi = Punctuation, Initial Quote (Informative).
Field Value:
29
Since:
1.4

LETTER_NUMBER

public static final byte LETTER_NUMBER

Nl = Number, Letter (Normative).
Field Value:
10
Since:
1.1

LINE_SEPARATOR

public static final byte LINE_SEPARATOR

Zl = Separator, Line (Normative).
Field Value:
13
Since:
1.1

LOWERCASE_LETTER

public static final byte LOWERCASE_LETTER

Ll = Letter, Lowercase (Informative).
Field Value:
2
Since:
1.1

MATH_SYMBOL

public static final byte MATH_SYMBOL

Sm = Symbol, Math (Informative).
Field Value:
25
Since:
1.1

MAX_CODE_POINT

public static final int MAX_CODE_POINT

The maximum Unicode 4.0 code point, which is greater than the range of the char data type. This value is 0x10FFFF.
Field Value:
1114111
Since:
1.5

MAX_HIGH_SURROGATE

public static final char MAX_HIGH_SURROGATE

The maximum Unicode high surrogate code unit, or leading-surrogate, in the UTF-16 character encoding. This value is '\uDBFF'.
Field Value:
'\udbff'
Since:
1.5

MAX_LOW_SURROGATE

public static final char MAX_LOW_SURROGATE

The maximum Unicode low surrogate code unit, or trailing-surrogate, in the UTF-16 character encoding. This value is '\uDFFF'.
Field Value:
'\udfff'
Since:
1.5

MAX_RADIX

public static final int MAX_RADIX

Largest value allowed for radix arguments in Java. This value is 36.
Field Value:
36
See Also:
digit(char,int), forDigit(int,int), Integer.toString(int,int), Integer.valueOf(String)

MAX_SURROGATE

public static final char MAX_SURROGATE

The maximum Unicode surrogate code unit in the UTF-16 character encoding. This value is '\uDFFF'.
Field Value:
'\udfff'
Since:
1.5

MAX_VALUE

public static final char MAX_VALUE

The maximum value the char data type can hold. This value is '\\uFFFF'.
Field Value:
'\uffff'

MIN_CODE_POINT

public static final int MIN_CODE_POINT

The minimum Unicode 4.0 code point. This value is 0.
Field Value:
0
Since:
1.5

MIN_HIGH_SURROGATE

public static final char MIN_HIGH_SURROGATE

The minimum Unicode high surrogate code unit, or leading-surrogate, in the UTF-16 character encoding. This value is '\uD800'.
Field Value:
'\ud800'
Since:
1.5

MIN_LOW_SURROGATE

public static final char MIN_LOW_SURROGATE

The minimum Unicode low surrogate code unit, or trailing-surrogate, in the UTF-16 character encoding. This value is '\uDC00'.
Field Value:
'\udc00'
Since:
1.5

MIN_RADIX

public static final int MIN_RADIX

Smallest value allowed for radix arguments in Java. This value is 2.
Field Value:
2
See Also:
digit(char,int), forDigit(int,int), Integer.toString(int,int), Integer.valueOf(String)

MIN_SUPPLEMENTARY_CODE_POINT

public static final int MIN_SUPPLEMENTARY_CODE_POINT

The lowest possible supplementary Unicode code point (the first code point outside the basic multilingual plane (BMP)). This value is 0x10000.
Field Value:
65536

MIN_SURROGATE

public static final char MIN_SURROGATE

The minimum Unicode surrogate code unit in the UTF-16 character encoding. This value is '\uD800'.
Field Value:
'\ud800'
Since:
1.5

MIN_VALUE

public static final char MIN_VALUE

The minimum value the char data type can hold. This value is '\\u0000'.
Field Value:
'\u0000'

MODIFIER_LETTER

public static final byte MODIFIER_LETTER

Lm = Letter, Modifier (Informative).
Field Value:
4
Since:
1.1

MODIFIER_SYMBOL

public static final byte MODIFIER_SYMBOL

Sk = Symbol, Modifier (Informative).
Field Value:
27
Since:
1.1

NON_SPACING_MARK

public static final byte NON_SPACING_MARK

Mn = Mark, Non-Spacing (Normative).
Field Value:
6
Since:
1.1

OTHER_LETTER

public static final byte OTHER_LETTER

Lo = Letter, Other (Informative).
Field Value:
5
Since:
1.1

OTHER_NUMBER

public static final byte OTHER_NUMBER

No = Number, Other (Normative).
Field Value:
11
Since:
1.1

OTHER_PUNCTUATION

public static final byte OTHER_PUNCTUATION

Po = Punctuation, Other (Informative).
Field Value:
24
Since:
1.1

OTHER_SYMBOL

public static final byte OTHER_SYMBOL

So = Symbol, Other (Informative).
Field Value:
28
Since:
1.1

PARAGRAPH_SEPARATOR

public static final byte PARAGRAPH_SEPARATOR

Zp = Separator, Paragraph (Normative).
Field Value:
14
Since:
1.1

PRIVATE_USE

public static final byte PRIVATE_USE

Co = Other, Private Use (Normative).
Field Value:
18
Since:
1.1

SIZE

public static final int SIZE

The number of bits needed to represent a char.
Field Value:
16
Since:
1.5

SPACE_SEPARATOR

public static final byte SPACE_SEPARATOR

Zs = Separator, Space (Normative).
Field Value:
12
Since:
1.1

START_PUNCTUATION

public static final byte START_PUNCTUATION

Ps = Punctuation, Open (Informative).
Field Value:
21
Since:
1.1

SURROGATE

public static final byte SURROGATE

Cs = Other, Surrogate (Normative).
Field Value:
19
Since:
1.1

TITLECASE_LETTER

public static final byte TITLECASE_LETTER

Lt = Letter, Titlecase (Informative).
Field Value:
3
Since:
1.1

TYPE

public static final Class TYPE

Class object representing the primitive char data type.
Since:
1.1

UNASSIGNED

public static final byte UNASSIGNED

Cn = Other, Not Assigned (Normative).
Field Value:
0
Since:
1.1

UPPERCASE_LETTER

public static final byte UPPERCASE_LETTER

Lu = Letter, Uppercase (Informative).
Field Value:
1
Since:
1.1

Character

public Character(char value)

Wraps up a character.
Parameters:
value - the character to wrap

charCount

public static int charCount(int codePoint)

Return number of 16-bit characters required to represent the given code point.
Parameters:
codePoint - a unicode code point
Returns:
2 if codePoint >= 0x10000, 1 otherwise.
Since:
1.5

charValue

public char charValue()

Returns the character which has been wrapped by this class.
Returns:
the character wrapped

codePointAt

public static int codePointAt(char[] chars,
                              int index)

Get the code point at the specified index in the CharSequence. If the character is the start of a surrogate pair, and there is a following character, and this character completes the pair, then the corresponding supplementary code point is returned. Otherwise, the character at the index is returned.
Parameters:
chars - the character array in which to look
index - the index of the codepoint to get, starting at 0
Returns:
the codepoint at the specified index
Throws:
IndexOutOfBoundsException - if index is negative or >= length()
Since:
1.5

codePointAt

public static int codePointAt(char[] chars,
                              int index,
                              int limit)

Get the code point at the specified index in the CharSequence. If the character is the start of a surrogate pair, and there is a following character within the specified range, and this character completes the pair, then the corresponding supplementary code point is returned. Otherwise, the character at the index is returned.
Parameters:
chars - the character array in which to look
index - the index of the codepoint to get, starting at 0
limit - the limit past which characters should not be examined
Returns:
the codepoint at the specified index
Throws:
IndexOutOfBoundsException - if index is negative or >= limit, or if limit is negative or >= the length of the array
Since:
1.5

codePointAt

public static int codePointAt(CharSequence sequence,
                              int index)

Get the code point at the specified index in the CharSequence. This is like CharSequence#charAt(int), but if the character is the start of a surrogate pair, and there is a following character, and this character completes the pair, then the corresponding supplementary code point is returned. Otherwise, the character at the index is returned.
Parameters:
sequence - the CharSequence
index - the index of the codepoint to get, starting at 0
Returns:
the codepoint at the specified index
Throws:
IndexOutOfBoundsException - if index is negative or >= length()
Since:
1.5

codePointBefore

public static int codePointBefore(char[] chars,
                                  int index)

Get the code point before the specified index. This is like #codePointAt(char[], int), but checks the characters at index-1 and index-2 to see if they form a supplementary code point. If they do not, the character at index-1 is returned.
Parameters:
chars - the character array
index - the index just past the codepoint to get, starting at 0
Returns:
the codepoint at the specified index
Throws:
IndexOutOfBoundsException - if index is negative or >= length()
Since:
1.5

codePointBefore

public static int codePointBefore(char[] chars,
                                  int index,
                                  int start)

Get the code point before the specified index. This is like #codePointAt(char[], int), but checks the characters at index-1 and index-2 to see if they form a supplementary code point. If they do not, the character at index-1 is returned. The start parameter is used to limit the range of the array which may be examined.
Parameters:
chars - the character array
index - the index just past the codepoint to get, starting at 0
start - the index before which characters should not be examined
Returns:
the codepoint at the specified index
Throws:
IndexOutOfBoundsException - if index is > start or > the length of the array, or if limit is negative or >= the length of the array
Since:
1.5

codePointBefore

public static int codePointBefore(CharSequence sequence,
                                  int index)

Get the code point before the specified index. This is like #codePointAt(CharSequence, int), but checks the characters at index-1 and index-2 to see if they form a supple

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java.lang

Class Character

Nested Class Summary

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Details

COMBINING_SPACING_MARK

CONNECTOR_PUNCTUATION

CONTROL

CURRENCY_SYMBOL

DASH_PUNCTUATION

DECIMAL_DIGIT_NUMBER

DIRECTIONALITY_ARABIC_NUMBER

DIRECTIONALITY_BOUNDARY_NEUTRAL

DIRECTIONALITY_COMMON_NUMBER_SEPARATOR

DIRECTIONALITY_EUROPEAN_NUMBER

DIRECTIONALITY_EUROPEAN_NUMBER_SEPARATOR

DIRECTIONALITY_EUROPEAN_NUMBER_TERMINATOR

DIRECTIONALITY_LEFT_TO_RIGHT

DIRECTIONALITY_LEFT_TO_RIGHT_EMBEDDING

DIRECTIONALITY_LEFT_TO_RIGHT_OVERRIDE

DIRECTIONALITY_NONSPACING_MARK

DIRECTIONALITY_OTHER_NEUTRALS

DIRECTIONALITY_PARAGRAPH_SEPARATOR

DIRECTIONALITY_POP_DIRECTIONAL_FORMAT

DIRECTIONALITY_RIGHT_TO_LEFT

DIRECTIONALITY_RIGHT_TO_LEFT_ARABIC

DIRECTIONALITY_RIGHT_TO_LEFT_EMBEDDING

DIRECTIONALITY_RIGHT_TO_LEFT_OVERRIDE

DIRECTIONALITY_SEGMENT_SEPARATOR

DIRECTIONALITY_UNDEFINED

DIRECTIONALITY_WHITESPACE

ENCLOSING_MARK

END_PUNCTUATION

FINAL_QUOTE_PUNCTUATION

FORMAT

INITIAL_QUOTE_PUNCTUATION

LETTER_NUMBER

LINE_SEPARATOR

LOWERCASE_LETTER

MATH_SYMBOL

MAX_CODE_POINT

MAX_HIGH_SURROGATE

MAX_LOW_SURROGATE

MAX_RADIX

MAX_SURROGATE

MAX_VALUE

MIN_CODE_POINT

MIN_HIGH_SURROGATE

MIN_LOW_SURROGATE

MIN_RADIX

MIN_SUPPLEMENTARY_CODE_POINT

MIN_SURROGATE

MIN_VALUE

MODIFIER_LETTER

MODIFIER_SYMBOL

NON_SPACING_MARK

OTHER_LETTER

OTHER_NUMBER

OTHER_PUNCTUATION

OTHER_SYMBOL

PARAGRAPH_SEPARATOR

PRIVATE_USE

SIZE

SPACE_SEPARATOR

START_PUNCTUATION

SURROGATE

TITLECASE_LETTER

TYPE

UNASSIGNED

UPPERCASE_LETTER

Constructor Details

Character

Method Details

charCount

charValue

codePointAt

codePointAt