Addition Of Two Numbers In Java

Add Two Numbers in Java

    Overview

• How to add two numbers in Java will show addition of given two numbers.

    Scope of Article

• This article provides information about addition of two numbers in Java.
• Examples of different ways of summing are given.
• Uses the ( + )  operator to add two numbers.
• Let's see how we can add two numbers in Java.

Method 1: Sum of two numbers

    This is the simplest way to add two numbers in Java. We will initialize and declare the value in the program itself. Here no input value is taken from the user. 

Example :

 class Main 
 {
     public static void main(String[] args) 
     {
         int e1 , f2 , sum ; 
         e1 = 100 ;    // Initialize 
         f2 = 200 ;
         sum = e1 + f2 ;  // Addition operation
         System.out.println("Addition of "+e1+" + "+f2+" = "+sum);
     }
 }

Output

Addition of 100 + 200  = 300

    Explanation In the above program we have taken three variables and two of them have initialized values ​​in the program. And addition of two initialised variables is taken as sum variable. Two constant numbers are displayed through the program. 

Method 2 : Add Two Numbers in Java With User Input

    In Java, let's see how to take user input and sum it using the Scanner class. 

Example :

import java.util.*;
public class Main {
    public static void main(String[] args)
        {
            Scanner in=new Scanner(System.in);
            int e1 , f2 , sum;
            System.out.println("Enter A First Number = ");
            e1 = in.nextInt();  //Input Operation

            System.out.println("Enter A Second Number = ");
            f2 = in.nextInt();  
            sum = e1 + f2;  //Addition Operation
            System.out.println("Addition of "+e1+" + "+f2+" = "+sum);
        }
}

Output 
    Enter A First Number = 40
    Enter A Second Number = 100

    Addition of 40 + 100 = 140

  Explanation We use the scanner class to take input from the user, the line in.nextInt() reads the user input as an integer and saves its value variables E1 and F2. The sum of E1 and F2 is saved in the variable sum. and displayed on the screen.

Method 3 : Sum of 3 Numbers in Java

    3 numbers are added here as 2 numbers are added. For this we need three variables.

Example :

import java.util.*;
public class Main {
    public static void main(String[] args) 
        {
            Scanner in = new Scanner(System.in);
            int e1 , f2 , g3 , sum;
            System.out.println("Enter A first Number = ");
            e1 = in.nextInt(); //Input Operation

            System.out.println("Enter A Second Number = ");
            f2 = in.nextInt();

            System.out.println("Enter A Third Number = ");
            g3 = in.nextInt(); 
            sum = e1 + f2 + g3; //Addition Operation
            System.out.println("Addition Is = "+sum);
    }
}

Output 

    Enter A first Number = 100
    Enter A Second Number = 200
    Enter A Third Number = 300

    Addition Is = 600