Reverse Number

import java.util.Scanner;  
class Raj   
{  
  public static void main(String[] args) {
    
     int a,b;
     int d=  0;
     Scanner sc = new Scanner(System.in);
     System.out.print("Enter any number:");

     a = sc.nextInt();

     while(a>0)
     {
      b = a%10;
      a = a/10;
      d = (d*10)+b;
     }
     System.out.print("reverse is: "+d);
      
      }
    }