Java Program to Evaluate the sum of all digits of a given number

EVALUATE THE SUM OF ALL DIGITS OF A GIVEN NUMBER

In this program we learn how to evaluate the sum of all digits of a given number by provided user using Java.
Java program to evaluate the sum of all digits of a given number

// EVALUATE THE SUM OF ALL DIGITS OF A GIVEN NUMBER
import java.util.*;
class SumOfDigits
{
	int n;
	public
		SumOfDigits()
		{
			Scanner in = new Scanner(System.in);
			System.out.print("\n Enter a number : ");
			n = in.nextInt();
		}
		int cal()
		{
			int r, s = 0;
			do
			{
				r = n % 10;
				s = s + r;
				n = n / 10;
			}while(n != 0);
			return(s);
		}
		void display(int p)
		{
			System.out.println("\n The sum of digits = "+p);
		}
	public static void main(String arg[])
	{
		SumOfDigits a = new SumOfDigits();
		int p;
		p = a.cal();
		a.display(p);
	}
};

OUTPUT:

   Enter a number : 12542
   The sum of digits = 14