Program to reverse the number

package javabox;

public class ReverseNumberExample {

    public static void main(String[] args) {

        int n = 1234, s = 0;

  while(n>0){    
   r=n%10;  //getting remainder  
   s=(s*10)+r;    
   n=n/10;    
  }    

        System.out.println("Reversed Number: " + s);
    }
}

Output - 

Reversed Number: 4321