Class java.lang.Character
All Packages This Package Previous Next
Class java.lang.Character
java.lang.Object
|
+----java.lang.Character
-
public final class
Character
-
extends Object
The Character class provides an object wrapper for character data values,
and serves as a place for character-oriented operations.
-
Version:
-
1.13, 31 Jan 1995
-
Author:
-
Lee Boynton
-
MAX_RADIX
-
The maximum radix available for conversion to/from strings.
-
MIN_RADIX
-
The minimum radix available for conversion to/from strings.
-
Character(char)
-
Constructs a Character object with the specified value.
-
charValue()
-
Returns the value of this Character object.
-
digit(char, int)
-
Returns the numeric value of the character digit using the specified
radix.
-
forDigit(int, int)
-
Returns the character value for the specified digit in the specified
radix.
-
isDigit(char)
-
Determines if a character is a digit.
-
isLowerCase(char)
-
Determines if a character is lower case.
-
isUpperCase(char)
-
Determines if a character is upper case.
-
toLowerCase(char)
-
Returns the lower case character value of the specified character
value.
-
toString()
-
Returns a String object representing this character's value.
-
toUpperCase(char)
-
Returns the upper case character value of the specified character
value.
MIN_RADIX
public final static int MIN_RADIX
-
The minimum radix available for conversion to/from strings.
-
See Also:
-
toString
MAX_RADIX
public final static int MAX_RADIX
-
The maximum radix available for conversion to/from strings.
-
See Also:
-
toString
Character
public Character(char value)
-
Constructs a Character object with the specified value.
isLowerCase
public static boolean isLowerCase(char ch)
-
Determines if a character is lower case.
-
Parameters:
-
ch
-
the character to be tested
-
Returns:
-
true if the character is lower case.
isDigit
public static boolean isDigit(char ch)
-
Determines if a character is a digit.
-
Parameters:
-
ch
-
the character to be tested
-
Returns:
-
true if the character is a digit.
isUpperCase
public static boolean isUpperCase(char ch)
-
Determines if a character is upper case.
-
Parameters:
-
ch
-
the character to be tested
-
Returns:
-
true if the character is upper case.
toLowerCase
public static char toLowerCase(char ch)
-
Returns the lower case character value of the specified character
value. Characters that are not upper case letters are returned
unmodified.
-
Parameters:
-
ch
-
the character to be converted
-
Returns:
-
the lower case version of ch
toUpperCase
public static char toUpperCase(char ch)
-
Returns the upper case character value of the specified character
value. Characters that are not lower case letters are returned
unmodified.
-
Parameters:
-
ch
-
the character to be converted
-
Returns:
-
the upper case version of ch
digit
public static int digit(char ch,
int radix)
-
Returns the numeric value of the character digit using the specified
radix. If the character is not a valid digit, return -1.
-
Parameters:
-
ch
-
the character to be converted
-
radix
-
the radix
-
Returns:
-
the corresponding numeric value
forDigit
public static char forDigit(int digit,
int radix)
-
Returns the character value for the specified digit in the specified
radix. If the digit is not valid in that radix, the 0 character
is returned.
-
Parameters:
-
digit
-
the digit
-
radix
-
the radix
-
Returns:
-
the corresponding character
charValue
public char charValue()
-
Returns the value of this Character object.
toString
public String toString()
-
Returns a String object representing this character's value.
-
Returns:
-
a String representing the value of the character.
-
Overrides:
-
toString in class Object
All Packages This Package Previous Next