Simple java program for adding two numbers
Java Program to Add Two Integers
In this section, you will learn how to easily add two numbers in Java. Let's see :
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If you using int data type, then you can add numbers up to alimit(range of int data type).
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If you want to add very large numbers, then you may use theBigInteger class in Java.
1.) First program :
In this program, we specify the value of both the numbers in the program itself.
Let's try to create a simple example :
➤ Example : Add two numbers with predefined value;
class AddTwoNumbers {
public static void main(String[] args) {
int x = 10, y = 15, sum;
sum = x + y;
System.out.println("Sum of these numbers: "+sum);
}
}
Explanation :
Example 1 : explanation
Then, x and y are added using the + operator, and its result is stored in another variable sum.
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Finally, sum is printed on the screen using System.out.println() function.
In the above program, we have created three integer variables x, y and sum, then stored (10 and 15) values in x and y.
2.) Second program :
In this program, we will take two inputs from the user(entered by the user) and prints the sum.
Note : Scanner class is a part of package(java.util package), so we required to import this package in our Java program.
Let's try to create a simple example :
➤ Example : Add two numbers with user input(Scanner);
import java.util.Scanner;
class AddTwoNumbers
{
public static void main(String[] args) {
int x, y, add;
System.out.println("Enter two integers to calculate their sum : ");
Scanner in = new Scanner(System.in);
x = in.nextInt();
y = in.nextInt();
sum = x + y;
System.out.println("Sum of two numbers is = " + sum);
}
}
Explanation :
Example 2 : explanation
Then, x and y are added using the + operator, and its result is stored in another variable sum.
-
Finally, sum is printed on the screen using System.out.println() function.
In the above program, we have created three integer variables x, y and sum, then create a Scanner class so that you can take input from the user for x and y.