Program for Sum of Digits of a Number in Java

Here we will create Java Program for Sum of Digits of a Number in Java.

Using While loop :-

Create the scanner class object to pass user input.
User input is store in n.
Declare a variable sum to store value and initialize to 0.
Initialize reminder to 0 and it is use modulo(%) operator to give last digit number of user input value.
Add the last digit value with sum.
Divide the number(n) by 10. it remove the last number of digit.
Now print the sum of digit number.

				
					import java.util.Scanner;

public class SumOfDigit {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int sum = 0, reminder = 0;
		System.out.println("enter the number:");
		int n = sc.nextInt();
		while (n != 0) {
			reminder = n % 10;
			sum = sum + reminder;
			n = n / 10;
		}
		System.out.println("the sum of digits is:- " + sum);
	}
}

Output :-
enter the number:
12
the sum of digits is:- 3