Operators and For Loop:Reverse of a number

import java.util.Scanner;
public class Main {
	
	public static void main(String[] args) {
	    Scanner s=new Scanner(System.in);
        int n=s.nextInt();
        int rev=0;
        while( n!=0)
        {
            int rem=n%10;
             rev=(rev*10)+rem;
            n=n/10;
            
        }
        
        System.out.println(rev);

	}
}