Character

public final class Character
extends Object implements Comparable<Character>, Serializable

java.lang.Object
↳	java.lang.Character

The Character class wraps a value of the primitive type char in an object. An object of class Character contains a single field whose type is char.

In addition, this class provides several methods for determining a character's category (lowercase letter, digit, etc.) and for converting characters from uppercase to lowercase and vice versa.

Character information is based on the Unicode Standard

The methods and data of class Character are defined by the information in the UnicodeData file that is part of the Unicode Character Database maintained by the Unicode Consortium. This file specifies various properties including name and general category for every defined Unicode code point or character range.

The file and its description are available from the Unicode Consortium at:

http://www.unicode.org

Unicode Conformance

The fields and methods of class Character are defined in terms of character information from the Unicode Standard, specifically the UnicodeData file that is part of the Unicode Character Database. This file specifies properties including name and category for every assigned Unicode code point or character range. The file is available from the Unicode Consortium at http://www.unicode.org.

Character information is based on the Unicode Standard, version 15.0.

The Java platform has supported different versions of the Unicode Standard over time. Upgrades to newer versions of the Unicode Standard occurred in the following Java releases, each indicating the new version:

Shows Java releases and supported Unicode versions
Java release	Unicode version
Java SE 20	Unicode 15.0
Java SE 19	Unicode 14.0
Java SE 15	Unicode 13.0
Java SE 13	Unicode 12.1
Java SE 12	Unicode 11.0
Java SE 11	Unicode 10.0
Java SE 9	Unicode 8.0
Java SE 8	Unicode 6.2
Java SE 7	Unicode 6.0
Java SE 5.0	Unicode 4.0
Java SE 1.4	Unicode 3.0
JDK 1.1	Unicode 2.0
JDK 1.0.2	Unicode 1.1.5

Variations from these base Unicode versions, such as recognized appendixes, are documented elsewhere.

Unicode Character Representations

The char data type (and therefore the value that a Character object encapsulates) are based on the original Unicode specification, which defined characters as fixed-width 16-bit entities. The Unicode Standard has since been changed to allow for characters whose representation requires more than 16 bits. The range of legal code points is now U+0000 to U+10FFFF, known as Unicode scalar value. (Refer to the definition of the U+n notation in the Unicode Standard.)

The set of characters from U+0000 to U+FFFF is sometimes referred to as the Basic Multilingual Plane (BMP). Characters whose code points are greater than U+FFFF are called supplementary characters. The Java platform uses the UTF-16 representation in char arrays and in the String and StringBuffer classes. In this representation, supplementary characters are represented as a pair of char values, the first from the high-surrogates range, (\uD800-\uDBFF), the second from the low-surrogates range (\uDC00-\uDFFF).

A char value, therefore, represents Basic Multilingual Plane (BMP) code points, including the surrogate code points, or code units of the UTF-16 encoding. An int value represents all Unicode code points, including supplementary code points. The lower (least significant) 21 bits of int are used to represent Unicode code points and the upper (most significant) 11 bits must be zero. Unless otherwise specified, the behavior with respect to supplementary characters and surrogate char values is as follows:

The methods that only accept a char value cannot support supplementary characters. They treat char values from the surrogate ranges as undefined characters. For example, Character.isLetter('\uD840') returns false, even though this specific value if followed by any low-surrogate value in a string would represent a letter.
The methods that accept an int value support all Unicode characters, including supplementary characters. For example, Character.isLetter(0x2F81A) returns true because the code point value represents a letter (a CJK ideograph).

In the Java SE API documentation, Unicode code point is used for character values in the range between U+0000 and U+10FFFF, and Unicode code unit is used for 16-bit char values that are code units of the UTF-16 encoding. For more information on Unicode terminology, refer to the Unicode Glossary.

Summary

Nested classes
`class`	`Character.Subset` Instances of this class represent particular subsets of the Unicode character set.
`class`	`Character.UnicodeBlock` A family of character subsets representing the character blocks in the Unicode specification.

Constants
`int`	`BYTES` The number of bytes used to represent a `char` value in unsigned binary form.
`byte`	`COMBINING_SPACING_MARK` General category "Mc" in the Unicode specification.
`byte`	`CONNECTOR_PUNCTUATION` General category "Pc" in the Unicode specification.
`byte`	`CONTROL` General category "Cc" in the Unicode specification.
`byte`	`CURRENCY_SYMBOL` General category "Sc" in the Unicode specification.
`byte`	`DASH_PUNCTUATION` General category "Pd" in the Unicode specification.
`byte`	`DECIMAL_DIGIT_NUMBER` General category "Nd" in the Unicode specification.
`byte`	`DIRECTIONALITY_ARABIC_NUMBER` Weak bidirectional character type "AN" in the Unicode specification.
`byte`	`DIRECTIONALITY_BOUNDARY_NEUTRAL` Weak bidirectional character type "BN" in the Unicode specification.
`byte`	`DIRECTIONALITY_COMMON_NUMBER_SEPARATOR` Weak bidirectional character type "CS" in the Unicode specification.
`byte`	`DIRECTIONALITY_EUROPEAN_NUMBER` Weak bidirectional character type "EN" in the Unicode specification.
`byte`	`DIRECTIONALITY_EUROPEAN_NUMBER_SEPARATOR` Weak bidirectional character type "ES" in the Unicode specification.
`byte`	`DIRECTIONALITY_EUROPEAN_NUMBER_TERMINATOR` Weak bidirectional character type "ET" in the Unicode specification.
`byte`	`DIRECTIONALITY_FIRST_STRONG_ISOLATE` Weak bidirectional character type "FSI" in the Unicode specification.
`byte`	`DIRECTIONALITY_LEFT_TO_RIGHT` Strong bidirectional character type "L" in the Unicode specification.
`byte`	`DIRECTIONALITY_LEFT_TO_RIGHT_EMBEDDING` Strong bidirectional character type "LRE" in the Unicode specification.
`byte`	`DIRECTIONALITY_LEFT_TO_RIGHT_ISOLATE` Weak bidirectional character type "LRI" in the Unicode specification.
`byte`	`DIRECTIONALITY_LEFT_TO_RIGHT_OVERRIDE` Strong bidirectional character type "LRO" in the Unicode specification.
`byte`	`DIRECTIONALITY_NONSPACING_MARK` Weak bidirectional character type "NSM" in the Unicode specification.
`byte`	`DIRECTIONALITY_OTHER_NEUTRALS` Neutral bidirectional character type "ON" in the Unicode specification.
`byte`	`DIRECTIONALITY_PARAGRAPH_SEPARATOR` Neutral bidirectional character type "B" in the Unicode specification.
`byte`	`DIRECTIONALITY_POP_DIRECTIONAL_FORMAT` Weak bidirectional character type "PDF" in the Unicode specification.
`byte`	`DIRECTIONALITY_POP_DIRECTIONAL_ISOLATE` Weak bidirectional character type "PDI" in the Unicode specification.
`byte`	`DIRECTIONALITY_RIGHT_TO_LEFT` Strong bidirectional character type "R" in the Unicode specification.
`byte`	`DIRECTIONALITY_RIGHT_TO_LEFT_ARABIC` Strong bidirectional character type "AL" in the Unicode specification.
`byte`	`DIRECTIONALITY_RIGHT_TO_LEFT_EMBEDDING` Strong bidirectional character type "RLE" in the Unicode specification.
`byte`	`DIRECTIONALITY_RIGHT_TO_LEFT_ISOLATE` Weak bidirectional character type "RLI" in the Unicode specification.
`byte`	`DIRECTIONALITY_RIGHT_TO_LEFT_OVERRIDE` Strong bidirectional character type "RLO" in the Unicode specification.
`byte`	`DIRECTIONALITY_SEGMENT_SEPARATOR` Neutral bidirectional character type "S" in the Unicode specification.
`byte`	`DIRECTIONALITY_UNDEFINED` Undefined bidirectional character type.
`byte`	`DIRECTIONALITY_WHITESPACE` Neutral bidirectional character type "WS" in the Unicode specification.
`byte`	`ENCLOSING_MARK` General category "Me" in the Unicode specification.
`byte`	`END_PUNCTUATION` General category "Pe" in the Unicode specification.
`byte`	`FINAL_QUOTE_PUNCTUATION` General category "Pf" in the Unicode specification.
`byte`	`FORMAT` General category "Cf" in the Unicode specification.
`byte`	`INITIAL_QUOTE_PUNCTUATION` General category "Pi" in the Unicode specification.
`byte`	`LETTER_NUMBER` General category "Nl" in the Unicode specification.
`byte`	`LINE_SEPARATOR` General category "Zl" in the Unicode specification.
`byte`	`LOWERCASE_LETTER` General category "Ll" in the Unicode specification.
`byte`	`MATH_SYMBOL` General category "Sm" in the Unicode specification.
`int`	`MAX_CODE_POINT` The maximum value of a Unicode code point, constant `U+10FFFF`.
`char`	`MAX_HIGH_SURROGATE` The maximum value of a Unicode high-surrogate code unit in the UTF-16 encoding, constant `'\uDBFF'`.
`char`	`MAX_LOW_SURROGATE` The maximum value of a Unicode low-surrogate code unit in the UTF-16 encoding, constant `'\uDFFF'`.
`int`	`MAX_RADIX` The maximum radix available for conversion to and from strings.
`char`	`MAX_SURROGATE` The maximum value of a Unicode surrogate code unit in the UTF-16 encoding, constant `'\uDFFF'`.
`char`	`MAX_VALUE` The constant value of this field is the largest value of type `char`, `'\uFFFF'`.
`int`	`MIN_CODE_POINT` The minimum value of a Unicode code point, constant `U+0000`.
`char`	`MIN_HIGH_SURROGATE` The minimum value of a Unicode high-surrogate code unit in the UTF-16 encoding, constant `'\uD800'`.
`char`	`MIN_LOW_SURROGATE` The minimum value of a Unicode low-surrogate code unit in the UTF-16 encoding, constant `'\uDC00'`.
`int`	`MIN_RADIX` The minimum radix available for conversion to and from strings.
`int`	`MIN_SUPPLEMENTARY_CODE_POINT` The minimum value of a Unicode supplementary code point, constant `U+10000`.
`char`	`MIN_SURROGATE` The minimum value of a Unicode surrogate code unit in the UTF-16 encoding, constant `'\uD800'`.
`char`	`MIN_VALUE` The constant value of this field is the smallest value of type `char`, `'\u0000'`.
`byte`	`MODIFIER_LETTER` General category "Lm" in the Unicode specification.
`byte`	`MODIFIER_SYMBOL` General category "Sk" in the Unicode specification.
`byte`	`NON_SPACING_MARK` General category "Mn" in the Unicode specification.
`byte`	`OTHER_LETTER` General category "Lo" in the Unicode specification.
`byte`	`OTHER_NUMBER` General category "No" in the Unicode specification.
`byte`	`OTHER_PUNCTUATION` General category "Po" in the Unicode specification.
`byte`	`OTHER_SYMBOL` General category "So" in the Unicode specification.
`byte`	`PARAGRAPH_SEPARATOR` General category "Zp" in the Unicode specification.
`byte`	`PRIVATE_USE` General category "Co" in the Unicode specification.
`int`	`SIZE` The number of bits used to represent a `char` value in unsigned binary form, constant `16`.
`byte`	`SPACE_SEPARATOR` General category "Zs" in the Unicode specification.
`byte`	`START_PUNCTUATION` General category "Ps" in the Unicode specification.
`byte`	`SURROGATE` General category "Cs" in the Unicode specification.
`byte`	`TITLECASE_LETTER` General category "Lt" in the Unicode specification.
`byte`	`UNASSIGNED` General category "Cn" in the Unicode specification.
`byte`	`UPPERCASE_LETTER` General category "Lu" in the Unicode specification.

Fields
`public static final Class<Character>`	`TYPE` The `Class` instance representing the primitive type `char`.

Public constructors
`Character(char value)` This constructor is deprecated. It is rarely appropriate to use this constructor. The static factory `valueOf(char)` is generally a better choice, as it is likely to yield significantly better space and time performance.

Public methods
`static int`	`charCount(int codePoint)` Determines the number of `char` values needed to represent the specified character (Unicode code point).
`char`	`charValue()` Returns the value of this `Character` object.
`static int`	`codePointAt(char[] a, int index, int limit)` Returns the code point at the given index of the `char` array, where only array elements with `index` less than `limit` can be used.
`static int`	`codePointAt(char[] a, int index)` Returns the code point at the given index of the `char` array.
`static int`	`codePointAt(CharSequence seq, int index)` Returns the code point at the given index of the `CharSequence`.
`static int`	`codePointBefore(char[] a, int index)` Returns the code point preceding the given index of the `char` array.
`static int`	`codePointBefore(CharSequence seq, int index)` Returns the code point preceding the given index of the `CharSequence`.
`static int`	`codePointBefore(char[] a, int index, int start)` Returns the code point preceding the given index of the `char` array, where only array elements with `index` greater than or equal to `start` can be used.
`static int`	`codePointCount(CharSequence seq, int beginIndex, int endIndex)` Returns the number of Unicode code points in the text range of the specified char sequence.
`static int`	`codePointCount(char[] a, int offset, int count)` Returns the number of Unicode code points in a subarray of the `char` array argument.
`static int`	`codePointOf(String name)` Returns the code point value of the Unicode character specified by the given character name.
`static int`	`compare(char x, char y)` Compares two `char` values numerically.
`int`	`compareTo(Character anotherCharacter)` Compares two `Character` objects numerically.
`static int`	`digit(int codePoint, int radix)` Returns the numeric value of the specified character (Unicode code point) in the specified radix.
`static int`	`digit(char ch, int radix)` Returns the numeric value of the character `ch` in the specified radix.
`boolean`	`equals(Object obj)` Compares this object against the specified object.
`static char`	`forDigit(int digit, int radix)` Determines the character representation for a specific digit in the specified radix.
`static byte`	`getDirectionality(char ch)` Returns the Unicode directionality property for the given character.
`static byte`	`getDirectionality(int codePoint)` Returns the Unicode directionality property for the given character (Unicode code point).
`static String`	`getName(int codePoint)` Returns the name of the specified character `codePoint`, or null if the code point is `unassigned`.
`static int`	`getNumericValue(int codePoint)` Returns the `int` value that the specified character (Unicode code point) represents.
`static int`	`getNumericValue(char ch)` Returns the `int` value that the specified Unicode character represents.
`static int`	`getType(char ch)` Returns a value indicating a character's general category.
`static int`	`getType(int codePoint)` Returns a value indicating a character's general category.
`static int`	`hashCode(char value)` Returns a hash code for a `char` value; compatible with `Character.hashCode()`.
`int`	`hashCode()` Returns a hash code for this `Character`; equal to the result of invoking `charValue()`.
`static char`	`highSurrogate(int codePoint)` Returns the leading surrogate (a high surrogate code unit) of the surrogate pair representing the specified supplementary character (Unicode code point) in the UTF-16 encoding.
`static boolean`	`isAlphabetic(int codePoint)` Determines if the specified character (Unicode code point) is alphabetic.
`static boolean`	`isBmpCodePoint(int codePoint)` Determines whether the specified character (Unicode code point) is in the Basic Multilingual Plane (BMP).
`static boolean`	`isDefined(int codePoint)` Determines if a character (Unicode code point) is defined in Unicode.
`static boolean`	`isDefined(char ch)` Determines if a character is defined in Unicode.
`static boolean`	`isDigit(char ch)` Determines if the specified character is a digit.
`static boolean`	`isDigit(int codePoint)` Determines if the specified character (Unicode code point) is a digit.
`static boolean`	`isEmoji(int codePoint)` Determines if the specified character (Unicode code point) is an Emoji.
`static boolean`	`isEmojiComponent(int codePoint)` Determines if the specified character (Unicode code point) is an Emoji Component.
`static boolean`	`isEmojiModifier(int codePoint)` Determines if the specified character (Unicode code point) is an Emoji Modifier.
`static boolean`	`isEmojiModifierBase(int codePoint)` Determines if the specified character (Unicode code point) is an Emoji Modifier Base.
`static boolean`	`isEmojiPresentation(int codePoint)` Determines if the specified character (Unicode code point) has the Emoji Presentation property by default.
`static boolean`	`isExtendedPictographic(int codePoint)` Determines if the specified character (Unicode code point) is an Extended Pictographic.
`static boolean`	`isHighSurrogate(char ch)` Determines if the given `char` value is a Unicode high-surrogate code unit (also known as leading-surrogate code unit).
`static boolean`	`isISOControl(char ch)` Determines if the specified character is an ISO control character.
`static boolean`	`isISOControl(int codePoint)` Determines if the referenced character (Unicode code point) is an ISO control character.
`static boolean`	`isIdentifierIgnorable(char ch)` Determines if the specified character should be regarded as an ignorable character in a Java identifier or a Unicode identifier.
`static boolean`	`isIdentifierIgnorable(int codePoint)` Determines if the specified character (Unicode code point) should be regarded as an ignorable character in a Java identifier or a Unicode identifier.
`static boolean`	`isIdeographic(int codePoint)` Determines if the specified character (Unicode code point) is a CJKV (Chinese, Japanese, Korean and Vietnamese) ideograph, as defined by the Unicode Standard.
`static boolean`	`isJavaIdentifierPart(char ch)` Determines if the specified character may be part of a Java identifier as other than the first character.
`static boolean`	`isJavaIdentifierPart(int codePoint)` Determines if the character (Unicode code point) may be part of a Java identifier as other than the first character.
`static boolean`	`isJavaIdentifierStart(int codePoint)` Determines if the character (Unicode code point) is permissible as the first character in a Java identifier.
`static boolean`	`isJavaIdentifierStart(char ch)` Determines if the specified character is permissible as the first character in a Java identifier.
`static boolean`	`isJavaLetter(char ch)` This method was deprecated in API level 15. Replaced by isJavaIdentifierStart(char).
`static boolean`	`isJavaLetterOrDigit(char ch)` This method was deprecated in API level 15. Replaced by isJavaIdentifierPart(char).
`static boolean`	`isLetter(char ch)` Determines if the specified character is a letter.
`static boolean`	`isLetter(int codePoint)` Determines if the specified character (Unicode code point) is a letter.
`static boolean`	`isLetterOrDigit(char ch)` Determines if the specified character is a letter or digit.
`static boolean`	`isLetterOrDigit(int codePoint)` Determines if the specified character (Unicode code point) is a letter or digit.
`static boolean`	`isLowSurrogate(char ch)` Determines if the given `char` value is a Unicode low-surrogate code unit (also known as trailing-surrogate code unit).
`static boolean`	`isLowerCase(char ch)` Determines if the specified character is a lowercase character.
`static boolean`	`isLowerCase(int codePoint)` Determines if the specified character (Unicode code point) is a lowercase character.
`static boolean`	`isMirrored(int codePoint)` Determines whether the specified character (Unicode code point) is mirrored according to the Unicode specification.
`static boolean`	`isMirrored(char ch)` Determines whether the character is mirrored according to the Unicode specification.
`static boolean`	`isSpace(char ch)` This method was deprecated in API level 15. Replaced by isWhitespace(char).
`static boolean`	`isSpaceChar(char ch)` Determines if the specified character is a Unicode space character.
`static boolean`	`isSpaceChar(int codePoint)` Determines if the specified character (Unicode code point) is a Unicode space character.
`static boolean`	`isSupplementaryCodePoint(int codePoint)` Determines whether the specified character (Unicode code point) is in the supplementary character range.
`static boolean`	`isSurrogate(char ch)` Determines if the given `char` value is a Unicode surrogate code unit.
`static boolean`	`isSurrogatePair(char high, char low)` Determines whether the specified pair of `char` values is a valid Unicode surrogate pair.
`static boolean`	`isTitleCase(int codePoint)` Determines if the specified character (Unicode code point) is a titlecase character.
`static boolean`	`isTitleCase(char ch)` Determines if the specified character is a titlecase character.
`static boolean`	`isUnicodeIdentifierPart(int codePoint)` Determines if the specified character (Unicode code point) may be part of a Unicode identifier as other than the first character.
`static boolean`	`isUnicodeIdentifierPart(char ch)` Determines if the specified character may be part of a Unicode identifier as other than the first character.
`static boolean`	`isUnicodeIdentifierStart(int codePoint)` Determines if the specified character (Unicode code point) is permissible as the first character in a Unicode identifier.
`static boolean`	`isUnicodeIdentifierStart(char ch)` Determines if the specified character is permissible as the first character in a Unicode identifier.
`static boolean`	`isUpperCase(char ch)` Determines if the specified character is an uppercase character.
`static boolean`	`isUpperCase(int codePoint)` Determines if the specified character (Unicode code point) is an uppercase character.
`static boolean`	`isValidCodePoint(int codePoint)` Determines whether the specified code point is a valid Unicode code point value.
`static boolean`	`isWhitespace(int codePoint)` Determines if the specified character (Unicode code point) is white space according to Java.
`static boolean`	`isWhitespace(char ch)` Determines if the specified character is white space according to Java.
`static char`	`lowSurrogate(int codePoint)` Returns the trailing surrogate (a low surrogate code unit) of the surrogate pair representing the specified supplementary character (Unicode code point) in the UTF-16 encoding.
`static int`	`offsetByCodePoints(CharSequence seq, int index, int codePointOffset)` Returns the index within the given char sequence that is offset from the given `index` by `codePointOffset` code points.
`static int`	`offsetByCodePoints(char[] a, int start, int count, int index, int codePointOffset)` Returns the index within the given `char` subarray that is offset from the given `index` by `codePointOffset` code points.
`static char`	`reverseBytes(char ch)` Returns the value obtained by reversing the order of the bytes in the specified `char` value.
`static int`	`toChars(int codePoint, char[] dst, int dstIndex)` Converts the specified character (Unicode code point) to its UTF-16 representation.
`static char[]`	`toChars(int codePoint)` Converts the specified character (Unicode code point) to its UTF-16 representation stored in a `char` array.
`static int`	`toCodePoint(char high, char low)` Converts the specified surrogate pair to its supplementary code point value.
`static int`	`toLowerCase(int codePoint)` Converts the character (Unicode code point) argument to lowercase using case mapping information from the UnicodeData file.
`static char`	`toLowerCase(char ch)` Converts the character argument to lowercase using case mapping information from the UnicodeData file.
`String`	`toString()` Returns a `String` object representing this `Character`'s value.
`static String`	`toString(char c)` Returns a `String` object representing the specified `char`.
`static String`	`toString(int codePoint)` Returns a `String` object representing the specified character (Unicode code point).
`static char`	`toTitleCase(char ch)` Converts the character argument to titlecase using case mapping information from the UnicodeData file.
`static int`	`toTitleCase(int codePoint)` Converts the character (Unicode code point) argument to titlecase using case mapping information from the UnicodeData file.
`static char`	`toUpperCase(char ch)` Converts the character argument to uppercase using case mapping information from the UnicodeData file.
`static int`	`toUpperCase(int codePoint)` Converts the character (Unicode code point) argument to uppercase using case mapping information from the UnicodeData file.
`static Character`	`valueOf(char c)` Returns a `Character` instance representing the specified `char` value.

Inherited methods

From class java.lang.Object

`Object`	`clone()` Creates and returns a copy of this object.
`boolean`	`equals(Object obj)` Indicates whether some other object is "equal to" this one.
`void`	`finalize()` Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.
`final Class<?>`	`getClass()` Returns the runtime class of this `Object`.
`int`	`hashCode()` Returns a hash code value for the object.
`final void`	`notify()` Wakes up a single thread that is waiting on this object's monitor.
`final void`	`notifyAll()` Wakes up all threads that are waiting on this object's monitor.
`String`	`toString()` Returns a string representation of the object.
`final void`	`wait(long timeoutMillis, int nanos)` Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.
`final void`	`wait(long timeoutMillis)` Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.
`final void`	`wait()` Causes the current thread to wait until it is awakened, typically by being notified or interrupted.

From interface java.lang.Comparable

abstract int

compareTo(Character o)

Compares this object with the specified object for order.

Constants

BYTES

Added in API level 24

 public static final int BYTES

The number of bytes used to represent a char value in unsigned binary form.

Constant Value: 2 (0x00000002)

Parameters
`a`	`char`: the `char` array
`index`	`int`: the index to the `char` values (Unicode code units) in the `char` array to be converted
`limit`	`int`: the index after the last array element that can be used in the `char` array

Throws
`NullPointerException`	if `a` is null.
`IndexOutOfBoundsException`	if the `index` argument is negative or not less than the `limit` argument, or if the `limit` argument is negative or greater than the length of the `char` array.

Parameters
`seq`	`CharSequence`: a sequence of `char` values (Unicode code units)
`index`	`int`: the index to the `char` values (Unicode code units) in `seq` to be converted

Throws
`NullPointerException`	if `seq` is null.
`IndexOutOfBoundsException`	if the value `index` is negative or not less than `seq.length()`.

Parameters
`a`	`char`: the `char` array
`index`	`int`: the index following the code point that should be returned

Parameters
`seq`	`CharSequence`: the `CharSequence` instance
`index`	`int`: the index following the code point that should be returned

Parameters
`seq`	`CharSequence`: the char sequence
`beginIndex`	`int`: the index to the first `char` of the text range.
`endIndex`	`int`: the index after the last `char` of the text range.

Parameters
`a`	`char`: the `char` array
`offset`	`int`: the index of the first `char` in the given `char` array
`count`	`int`: the length of the subarray in `char`s

Throws
`IllegalArgumentException`	if the specified `name` is not a valid character name.
`NullPointerException`	if `name` is `null`

Parameters
`x`	`char`: the first `char` to compare
`y`	`char`: the second `char` to compare

Parameters
`codePoint`	`int`: the character (Unicode code point) to be converted.
`radix`	`int`: the radix.

Parameters
`ch`	`char`: the character to be converted.
`radix`	`int`: the radix.

Parameters
`digit`	`int`: the number to convert to a character.
`radix`	`int`: the radix.

Character	Code	Name
`'\t'`	`U+0009`	`HORIZONTAL TABULATION`
`'\n'`	`U+000A`	`NEW LINE`
`'\f'`	`U+000C`	`FORM FEED`
`'\r'`	`U+000D`	`CARRIAGE RETURN`
`' '`	`U+0020`	`SPACE`

Parameters
`high`	`char`: the high-surrogate code value to be tested
`low`	`char`: the low-surrogate code value to be tested

Parameters
`a`	`char`: the `char` array
`start`	`int`: the index of the first `char` of the subarray
`count`	`int`: the length of the subarray in `char`s
`index`	`int`: the index to be offset
`codePointOffset`	`int`: the offset in code points

Parameters
`codePoint`	`int`: the character (Unicode code point) to be converted.
`dst`	`char`: an array of `char` in which the `codePoint`'s UTF-16 value is stored.
`dstIndex`	`int`: the start index into the `dst` array where the converted value is stored.

Throws
`IllegalArgumentException`	if the specified `codePoint` is not a valid Unicode code point.
`NullPointerException`	if the specified `dst` is null.
`IndexOutOfBoundsException`	if `dstIndex` is negative or not less than `dst.length`, or if `dst` at `dstIndex` doesn't have enough array element(s) to store the resulting `char` value(s). (If `dstIndex` is equal to `dst.length-1` and the specified `codePoint` is a supplementary character, the high-surrogate value is not stored in `dst[dstIndex]`.)

Parameters
`high`	`char`: the high-surrogate code unit
`low`	`char`: the low-surrogate code unit

Character

Unicode Conformance

Unicode Character Representations

Summary

Nested classes

Constants

Fields

Public constructors

Public methods

Inherited methods

Constants

BYTES

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_FIRST_STRONG_ISOLATE

DIRECTIONALITY_LEFT_TO_RIGHT

DIRECTIONALITY_LEFT_TO_RIGHT_EMBEDDING

DIRECTIONALITY_LEFT_TO_RIGHT_ISOLATE

DIRECTIONALITY_LEFT_TO_RIGHT_OVERRIDE

DIRECTIONALITY_NONSPACING_MARK

DIRECTIONALITY_OTHER_NEUTRALS

DIRECTIONALITY_PARAGRAPH_SEPARATOR

DIRECTIONALITY_POP_DIRECTIONAL_FORMAT

DIRECTIONALITY_POP_DIRECTIONAL_ISOLATE

DIRECTIONALITY_RIGHT_TO_LEFT

DIRECTIONALITY_RIGHT_TO_LEFT_ARABIC

DIRECTIONALITY_RIGHT_TO_LEFT_EMBEDDING

DIRECTIONALITY_RIGHT_TO_LEFT_ISOLATE

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

UNASSIGNED

UPPERCASE_LETTER