Unlocking the Power of Java: A Step-by-Step Guide to Complex Number Addition

Getting Started with Java Classes and Objects

Understanding classes and objects is crucial when it comes to programming in Java. In this example, we’ll explore how to add complex numbers using Java methods.

The Complex Class: A Closer Look

Let’s begin by creating a class called Complex with two member variables: real and imag. As their names suggest, real stores the real part of a complex number, while imag stores the imaginary part.

public class Complex {
    private double real;
    private double imag;

    public Complex(double real, double imag) {
        this.real = real;
        this.imag = imag;
    }
}

The Add Method: Where the Magic Happens

Now, let’s create a new static function called add() that takes two complex numbers as parameters and returns the result as a complex number.

public static Complex add(Complex n1, Complex n2) {
    double tempReal = n1.real + n2.real;
    double tempImag = n1.imag + n2.imag;
    return new Complex(tempReal, tempImag);
}

Bringing it All Together: The Main Function

In the main() function, we’ll put our add() method to the test. Here, we’ll create two complex numbers, add them together using our add() method, and print the result using the printf() function.

public static void main(String[] args) {
    Complex n1 = new Complex(3, 4);
    Complex n2 = new Complex(1, 2);
    Complex result = add(n1, n2);
    System.out.printf("The result is %f + %fi", result.real, result.imag);
}

The Output: A Complex Number Revealed

So, what’s the output of our program? When we run it, we’ll see the result of adding two complex numbers, displayed in a clear and concise manner.

This example demonstrates the power of Java classes and objects, as well as the versatility of static methods. By mastering these concepts, you’ll be well on your way to becoming a proficient Java programmer.