Add the digits

How to add all the digits of any number in java programming 

import java.util.*;

class  AddDigit

{

    public static void main(String[] args)                                                           

    {

         int   rem  ;           

         int   s = 0 ;

        Scanner sk = new Scanner(System.in);

        System.out.print("Enter number: ");

        int n = sk.nextInt();     

        while (n != 0)

        {

            rem = n % 10;

            s = s + rem ;

            n = n / 10;

        }

        System.out.println(" Sum of the digits is :   "  + s);          

    }

}

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