Question 2 loops

import java.util.Scanner;


public class q2 {

    public static void main(String[] args) {
        // TODO Auto-generated method stub

        Scanner S= new Scanner(System.in);

        System.out.println("enter the first number:");
        int num1= S.nextInt();      //the user enter the first number

        System.out.println("enter the second number:");
        int num2= S.nextInt();      //the user enter the second number

        int newNum1=num1, newNum2=num2; // installed the helper variable newNum1 <- num1 and newNum2 <- num2

        int newNum= 0;      // installed the result number

        int indexNewNum= 1;     // installed indexer to the result number

        while (newNum2 > 0) {   // run as long as newNum2 up to 0

            newNum+= newNum2%10*indexNewNum;    // add the right digit from the second number to the left of the result number

            indexNewNum*= 10;           // the indexer double by 10

            newNum+= newNum1%10*indexNewNum;    // add the right digit from the first number to the left of the result number

            indexNewNum*= 10;           // the indexer double by 10

            newNum1/=10;            //remove the right digit from first number

            newNum2/=10;            //remove the right digit from second number
        }


        System.out.println("the new number is: "+newNum);       // print the result
    }

}