Adding Integers in Java: A Step-by-Step Guide

Declaring Variables

In Java, understanding the basics is crucial for building a strong foundation. One essential concept is working with variables. Let’s start by declaring two integer variables, first and second, and assigning them values of 10 and 20, respectively.

int first = 10;
int second = 20;

Using the Addition Operator

Next, we’ll use the addition operator (+) to add first and second together. The result is stored in a new variable called sum.

int sum = first + second;

Printing the Result

Finally, we’ll use the println() function to print the value of sum to the screen.

System.out.println(sum);

The Complete Program

Here’s the complete program that adds two integers in Java:

public class AddIntegers {
    public static void main(String[] args) {
        int first = 10;
        int second = 20;
        int sum = first + second;
        System.out.println(sum);
    }
}

Taking it Further

If you’re interested in exploring more advanced concepts, consider calculating the sum of natural numbers in Java. This involves using loops and conditional statements to calculate the sum of a series of numbers. Here’s a brief outline to get you started:

• Declare a variable to store the sum
• Use a loop to iterate from 1 to n (where n is the number of natural numbers)
• Use a conditional statement to add each number to the sum
• Print the final sum

This exercise will help you build on your skills and take your programming to the next level.