Reverse Number

import java.util.*;
public class ReverseNumber
{
    public static void main(String args[])
    {
        int n=0,r=0,rev=0;
        Scanner sc=new Scanner(System.in);
        System.out.print("Enter a number: ");
        n=sc.nextInt();
        while(n>0)
        {
            r=n%10;
            rev=(rev*10)+r;
            n=n/10;
        }
        System.out.println("Reverse of the number is "+rev);
    }
}