Character Class in Java

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

char ch = 'a'; // Char
char uniChar = '\u039A'; // Unicode for char
char[] charArray = { 'a', 'b', 'c', 'd', 'e' }; // Array of chars

Important functions :

• char charValue()
  Returns the value of this Character object.
• static int compare(char x, char y)
  Compares two char values numerically.
• static int digit(char ch, int radix)
  Returns the numeric value of the character ch in the specified radix.
• static boolean isAlphabetic(int codePoint)
  Determines if the specified character (Unicode code point) is an alphabet.
• static boolean isDigit(char ch)
  Determines if the specified character is a digit.
• static boolean isLetter(char ch)
  Determines if the specified character is a letter.
• static boolean isLowerCase(char ch)
  Determines if the specified character is a lowercase character.
• static boolean isUpperCase(char ch)
  Determines if the specified character is an uppercase character.
• static boolean isWhitespace(char ch)
  Determines if the specified character is white space according to Java.
• static char toLowerCase(char ch)
  Converts the character argument to lowercase 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.