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Writing code in comment? Please use ide. Load Comments. Returns: the uppercase equivalent of the character, if any; otherwise, the character itself. See Also: isUpperCase char , String. If a character has no explicit titlecase mapping and is not itself a titlecase char according to UnicodeData, then the uppercase mapping is returned as an equivalent titlecase mapping.
If the char argument is already a titlecase char , the same char value will be returned. To support all Unicode characters, including supplementary characters, use the toTitleCase int method.
Returns: the titlecase equivalent of the character, if any; otherwise, the character itself. If the character argument is already a titlecase character, the same character value will be returned. A character is a valid digit if at least one of the following is true: The method isDigit is true of the character and the Unicode decimal digit value of the character or its single-character decomposition is less than the specified radix.
In this case the decimal digit value is returned. To support all Unicode characters, including supplementary characters, use the digit int, int method. Returns: the numeric value represented by the character in the specified radix. See Also: forDigit int, int , isDigit char digit public static int digit int codePoint, int radix Returns the numeric value of the specified character Unicode code point in the specified radix.
A character is a valid digit if at least one of the following is true: The method isDigit codePoint is true of the character and the Unicode decimal digit value of the character or its single-character decomposition is less than the specified radix.
This is independent of the Unicode specification, which does not assign numeric values to these char values. If the character does not have a numeric value, then -1 is returned. If the character has a numeric value that cannot be represented as a nonnegative integer for example, a fractional value , then -2 is returned. To support all Unicode characters, including supplementary characters, use the getNumericValue int method.
Returns: the numeric value of the character, as a nonnegative int value; -2 if the character has a numeric value that is not a nonnegative integer; -1 if the character has no numeric value. A character is considered to be a space character if and only if it is specified to be a space character by the Unicode Standard. To support all Unicode characters, including supplementary characters, use the isSpaceChar int method.
Returns: true if the character is a space character; false otherwise. To support all Unicode characters, including supplementary characters, use the isWhitespace int method. Returns: true if the character is a Java whitespace character; false otherwise. To support all Unicode characters, including supplementary characters, use the isISOControl int method.
Returns: true if the character is an ISO control character; false otherwise. To support all Unicode characters, including supplementary characters, use the getType int method.
Returns: a value of type int representing the character's general category. Parameters: digit - the number to convert to a character. Returns: the char representation of the specified digit in the specified radix.
Character directionality is used to calculate the visual ordering of text. To support all Unicode characters, including supplementary characters, use the getDirectionality int method.
Parameters: ch - char for which the directionality property is requested. Returns: the directionality property of the char value. Parameters: codePoint - the character Unicode code point for which the directionality property is requested.
Returns: the directionality property of the character. Mirrored characters should have their glyphs horizontally mirrored when displayed in text that is right-to-left. This will appear as a " " in text that is left-to-right but as a " " in text that is right-to-left. To support all Unicode characters, including supplementary characters, use the isMirrored int method. Parameters: ch - char for which the mirrored property is requested Returns: true if the char is mirrored, false if the char is not mirrored or is not defined.
Returns: true if the character is mirrored, false if the character is not mirrored or is not defined. Returns: the value 0 if the argument Character is equal to this Character ; a value less than 0 if this Character is numerically less than the Character argument; and a value greater than 0 if this Character is numerically greater than the Character argument unsigned comparison.
Note that this is strictly a numerical comparison; it is not locale-dependent. The value returned is identical to what would be returned by: Character. Returns: the value obtained by reversing or, equivalently, swapping the bytes in the specified char value.
Note: if the specified character is not assigned a name by the UnicodeData file part of the Unicode Character Database maintained by the Unicode Consortium , the returned name is the same as the result of expression. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.
All rights reserved. Use is subject to license terms. Also see the documentation redistribution policy. Object java. An object of type Character contains a single field whose type is char. A family of character subsets representing the character blocks in the Unicode specification. A family of character subsets representing the character scripts defined in the Unicode Standard Annex Script Names. The number of bits used to represent a char value in unsigned binary form, constant The Class instance representing the primitive type char.
Constructs a newly allocated Character object that represents the specified char value. Determines the number of char values needed to represent the specified character Unicode code point. Returns the code point at the given index of the char array, where only array elements with index less than limit can be used.
Returns the code point preceding the given index of the char array. 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. Returns the code point preceding the given index of the CharSequence. Returns the number of Unicode code points in a subarray of the char array argument. Returns the number of Unicode code points in the text range of the specified char sequence.
Returns the numeric value of the character ch in the specified radix. Returns the numeric value of the specified character Unicode code point in the specified radix.
Determines the character representation for a specific digit in the specified radix. Returns the Unicode directionality property for the given character Unicode code point. Returns the Unicode name of the specified character codePoint , or null if the code point is unassigned.
Returns the int value that the specified Unicode character represents. Returns the int value that the specified character Unicode code point represents.
Returns a hash code for this Character ; equal to the result of invoking charValue. Returns the leading surrogate a high surrogate code unit of the surrogate pair representing the specified supplementary character Unicode code point in the UTF encoding. The second comparison 'Glow' and 'Glee' needs more steps as strings are compared character-by-character:.
For instance, case matters. A capital letter "A" is not equal to the lowercase "a". Which one is greater? The lowercase "a". Because the lowercase character has a greater index in the internal encoding table JavaScript uses Unicode.
For boolean values, true becomes 1 and false becomes 0. An equality check converts values using the numeric conversion hence "0" becomes 0 , while the explicit Boolean conversion uses another set of rules.
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