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Java Character Class


In this chapter we discuss about character in java.


Example


char ch = 'x';

// Unicode for uppercase Greek omega character
char uniChar = '\u039A'; 

// an array of chars
char[] charArray ={ 'x', 'y', 'z' };
Java provides wrapper class Character for primitive data type char.

You can create a Character object with the Character constructor −

Character ch = new Character('x');


Escape Sequences

A character preceded by a backslash (\) is an escape sequence and has a special meaning to the compiler.

The newline character (\n) has been used frequently in this tutorial in System.out.println() statements to advance to the next line after the string is printed.

Escape Sequence Description
\t Use to Inserts a tab in the text at this point.
\n Use to Inserts a newline in the text at this point.
\f Use to Inserts a form feed in the text at this point.
\r Use to Inserts a carriage return in the text at this point.
\" Use to Inserts a double quote character in the text at this point..
\' Use to Inserts a single quote character in the text at this point.
\\ Use to Inserts a backslash character in the text at this point.

Example

use the escape sequence, \", on the interior quotes
public class Test {

   public static void main(String args[]) {
      System.out.println("Hello \"World\" !");
   }
}

Run example »
Output Hello "World" !

Character Methods

Following is the list of the important instance methods that all the subclasses of the Character class implement −

Method Description
isLetter() This method Determines whether the specified char(ch) value is a letter..
isDigit() This method Determines whether the specified char(ch) value is a digit.
isWhitespace() This method Determines whether the specified char value is white space.
isUpperCase() This method Determines whether the specified char(ch) value is uppercase.
isLowerCase() This method Determines whether the specified char(ch) value is lowercase.
toString() Returns a String object representing the specified character value that is, a one-character string..