w3resource

Java: Compute the sum of the digits in an integer

Java Method: Exercise-6 with Solution

Write a Java method to compute the sum of digits in an integer.

Test Data:
Input an integer: 25

Pictorial Presentation:

Java Method Exercises: Compute the sum of the digits in an integer

Sample Solution:

Java Code:

import java.util.Scanner;
public class Exercise6 {

  public static void main(String[] args)
    {
      Scanner in = new Scanner(System.in);
      System.out.print("Input an integer: ");
      int digits = in.nextInt();
	  System.out.println("The sum is " + sumDigits(digits));
    }

 public static int sumDigits(long n) {
		int result = 0;
		
		while(n > 0) {
			result += n % 10;
			n /= 10;
		}
		
		return result;
	}
	
 }

Sample Output:

Input an integer: 25                                                                                          
The sum is 7

Flowchart:

Flowchart: Compute the sum of the digits in an integer

Java Code Editor:

Contribute your code and comments through Disqus.

Previous: Write a Java method to count all words in a string.
Next: Write a Java method to display the first 50 pentagonal numbers.

What is the difficulty level of this exercise?

Test your Programming skills with w3resource's quiz.



Become a Patron!

Follow us on Facebook and Twitter for latest update.

It will be nice if you may share this link in any developer community or anywhere else, from where other developers may find this content. Thanks.

https://www.w3resource.com/java-exercises/method/java-method-exercise-6.php