Addition Operator Example in Java

Introduction

Addition Operator is a classic Java console program that demonstrates the concept with complete source code and sample output. Operators combine values, compare results and update variables — core skills for every Java program.

This tutorial walks through the program line by line, explains how the logic works, and highlights best practices you can apply in your own code.

Definition

Operators in Java are similar to those in C++. However, there is no delete operator due to garbage collection mechanisms in Java, and there are no operations on pointers since Java does not support them. Addition operator is an unary plus operator.

Syntax

data_type variable_name= number + number;

Addition Operator Example Program

class AdditionOperator{
	public static void main(String[] args){
		int num1,num2,num3,result;
		num1=7;
		num2=8;
		num3=11;
		System.out.println("num1=7; num2=8; num3=11");
		result=num1+num2+num3;
		System.out.println("The result after addition of these three numbers is : "+result);
	}
}

Sample Output

Output is
num1=7; num2=8; num3=11
The result after addition of these three numbers is : 26

When to use

Use this addition operator example when learning or revising core Java syntax.

How it works

1. Execution begins in the main method — the JVM calls this method when you run the class.

2. num1=7; updates a variable used in the calculation or output.

3. num2=8; updates a variable used in the calculation or output.

4. num3=11; updates a variable used in the calculation or output.

5. A println / print call writes text to the console — part of the sample output below.

6. result=num1+num2+num3; updates a variable used in the calculation or output.

7. A println / print call writes text to the console — part of the sample output below.

8. Compare your console output with the sample output for Addition Operator to confirm the program behaves correctly.

Best Practices

Common Mistakes