Java Characters

 To store a single a single character we use char data type. The character has to be surrounded by single quotes, for example 'x'.

To create a character data type we do the following 

char sex = 'm';

char sex = 'f';

m and f refer to male and female 

Character Methods

Character wrapper class has some important methods that can be used to work with char data type.

toString(char char);

This method takes character value and returns a String object , which is, a one-character string.

String myChar=Character.toString('x');

System.out.println(myChar);

toLowerCase(char c);

This method takes in argumment of type char and return it to Lower case.

System.out.println(toLowerCase('c'));

toUpperCase(char c);

This method takes in argumment of type char and return it to upper case.

System.out.println(toUpperCase('c');

isLetter(char ch);

This method takes in char argument and returns a Boolean whether is the argument true or not.

public class CharTest {

   public static void main(String args[]) {

      System.out.println(Character.isLetter('#'));

      System.out.println(Character.isLetter('x'));

      

   }

}