Java Program to Add Two Numbers

  • Java program to find sum of two numbers.
  • Write a java program to add two numbers and print it on screen.

To add two numbers in a java program, we will first take two integers as input from user using Scanner and store them in a integer variable num1 and num2. Then we add num1 and num2 using + arithmetic operator and store it in integer variable "sum". Finally, we print the sum of two given integers on screen.


Java Program to Find Sum of Two Numbers

package com.tcc.java.programs;

import java.util.*;

/**
 * Java Program to find sum of two numbers
 */
public class SumTwoNumbers {
    public static void main(String[] args) {
        int num1, num2, sum;
        Scanner scanner;

        scanner = new Scanner(System.in);

        // Take two integer input from user and
        // store it in variable num1 and num2
        System.out.println("Enter First Number");
        num1 = scanner.nextInt();

        System.out.println("Enter Second Number");
        num2 = scanner.nextInt();

        // Add two numbers using + operator
        sum = num1 + num2;
        System.out.println("Sum of " + num1 + " and " + num2 + " = " + sum);
    }
}
Output
Enter First Number
5
Enter Second Number
7
Sum of 5 and 7 = 12

Java Programs to Find Sum of Two Numbers using Function

This Java program is similar to above program except here we are using a user defined function getSum to calculate the sum of two integers. The function getSum takes two integer arguments and returns the sum of both input parameters.

package com.tcc.java.programs;

import java.util.*;

/**
 * Java Program to find sum of two numbers using function
 */
public class SumTwoNumbersFunction {

    public static void main(String[] args) {
        int num1, num2, sum;
        Scanner scanner;

        scanner = new Scanner(System.in);

        // Take two integer input from user and
        // store it in variable num1 and num2
        System.out.println("Enter First Number");
        num1 = scanner.nextInt();

        System.out.println("Enter Second Number");
        num2 = scanner.nextInt();

        /*
         * Call getSum by passing num1 and num2 as parameter
         */
        sum = getSum(num1, num2);
        System.out.println("Sum of " + num1 + " and " + num2 + " = " + sum);

    }

    /**
     * Function to add two numbers
     */
    public static int getSum(int num1, int num2) {
        int sum;
        sum = num1 + num2;
        return sum;
    }
}
Output
Enter First Number
9
Enter Second Number
12
Sum of 9 and 12 = 21

Recommended Posts
Java Program to Add Subtract Multiply and Divide Two Numbers
Java Program to Swap Two Numbers
Java Program to Check Odd or Even Numbers
Java Program to Find Largest of Three Numbers
Java Program to Check Whether a Number is Positive or Negative
Java Program to Find LCM and GCD of Two Numbers
Java Program to Find All Factors of a Number
Java Program to Find Sum of Digits of a Number
Java Program to Count Number of Digits in a Number
Java Program to Make a Simple Calculator using Switch Statement
Java Program to Convert Decimal to Binary Numbers
All Java Programs