do-while / Сбор на числа

import java.util.Scanner;

public class sumirane {

    public static void main(String[] args) {

        Scanner scan = new Scanner(System.in);

        int n = scan.nextInt();
        int sum = 0;
        do {
            sum = sum + (n % 10);
            n = n / 10;
        }while(n > 0);
   System.out.println("Suma:" + sum);
    }

}