How to write switch statements

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class SwitchExample {

 public static void main(String[] args) {
  int a = 2;
  switch (a) {
  case 1:
   System.out.println("a is equal to 1");
   break;
  case 2:
   System.out.println("a is equal to 2");
   break;
  case 3:
   System.out.println("a is equal to 3");
   break;
  default:
   System.out.println("value of a is not 1,2,or 3");
  }
 }
}

The output will be: a is equal to 2
Note: only char, byte, short, int can be used in switch variable