Java Program to Add Two Integers

In this Java tutorial, we will learn how to add two integers in JAVA and storing the integer in an variable.

How to Add Two Integers in Java?

Example 1:

Add Two Numbers

class Main {  

  public static void main(String[] args) {  

    System.out.println("Enter the two numbers");  

    int a = 12;  

    int b = 23;  

    System.out.println(a + " " + b);  

    int c = a + b;  

    System.out.println("The sum of two numbers is: " + c);  

  }  

}

Output 

Enter the two numbers 

12 23 

The sum of two numbers is: 35

• In the example 1 we have two integers 12 and 23 are stored in integer values a and b. 
• To add a and b we use + operator, and the result is stored in another variable called c. 
• To display the sum of the two integers in screen we use println function. 

Example 2:

• To get input from the user we use scanner class. The scanner class belongs to java.util.

import java.util.Scanner; 

public class Main { 

    public static void main(String[] args) { 

        int num1, num2, sum; 

        Scanner sc = new Scanner(System.in); 

        System.out.println("Enter First Number: "); 

        num1 = sc.nextInt(); 

        System.out.println("Enter Second Number: "); 

        num2 = sc.nextInt();        

        sc.close(); 

        sum = num1 + num2; 

        System.out.println("Sum of these numbers: "+sum); 

    } 

}

Output 

Enter First Number: 

12 

Enter Second Number: 

21 

Sum of these numbers:33

• In example 2 the scanner allows the user to enter the input, the two numbers 12 and 21 are stored in the integer values num1 and num2. 
• To add the two numbers, we use + operator and the result is stored in the sum variable.