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Sum of Digits Java Program

Sum of Digits Java Program

In this post, we will write a java program to calculate the sum of digits of a number. We will take input from the user with a prompt to enter the number.

 

 

Modulus Operator

Eclipse IDE Setup

Some steps and instructions to create a Java application on Eclipse IDE:

  • Create Java Project in Eclipse

https://www.testingdocs.com/create-a-new-java-project-in-eclipse/

  • Create Java Package in Eclipse

https://www.testingdocs.com/create-java-package-in-eclipse-ide/

  • Create Java Class in Eclipse

https://www.testingdocs.com/create-a-new-java-class-in-a-project/

  • Run Java Project in Eclipse

https://www.testingdocs.com/run-java-project-in-eclipse/

Java Program

import java.util.Scanner;
/**************************************************
 * DigitSum.java
 * @program : DigitSum to calculate the sum of 
 * digits in the number.
 * @web : www.TestingDocs.com
 * @version : 1.0
 **************************************************/
public class DigitSum {
 private int number;
 private int sum;

 /**
 * @return the number
 */
 public int getNumber() {
 return number;
 }

 /**
 * @param number the number to set
 */
 public void setNumber(int number) {
 this.number = number;
 }

 /**
 * @return the sum
 */
 public int getSum() {
 return sum;
 }

 /**
 * @param sum the sum to set
 */
 public void setSum(int sum) {
 this.sum = sum;
 }

 /**
 * @param number
 * @param sum
 */
 public DigitSum(int number) {
 this.number=number;
 this.sum = 0;
 }

 private void calculateSum() {
 int remainder = number;
 int digit = 0;
 while(remainder > 0) {
 digit= remainder%10;
 remainder= remainder/10;
 
 this.sum= this.sum + digit;
 }
 }

 public static void main(String args[]) {
 int number=0;
 Scanner keyboard = new Scanner(System.in);
 System.out.println("Enter number :=");
 number = keyboard.nextInt();

 DigitSum ds= new DigitSum(number);
 ds.calculateSum();
 System.out.println("Sum of Digits := " + ds.getSum());
 }
}

 

Program Output

Enter number :=
1687
Sum of Digits := 22

Screenshot

Sum of Digits of Number

 

 

Java Tutorials

Java Tutorial on this website:

 

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