Add Two Complex numbers Program in Java

import java.util.Scanner;

class ComplexNumber {
    double real;
    double imaginary;

    public ComplexNumber(double real, double imaginary) {
        this.real = real;
        this.imaginary = imaginary;
    }

    public static ComplexNumber add(ComplexNumber num1, ComplexNumber num2) {
        double realPart = num1.real + num2.real;
        double imaginaryPart = num1.imaginary + num2.imaginary;
        return new ComplexNumber(realPart, imaginaryPart);
    }

    @Override
    public String toString() {
        if (imaginary < 0) {
            return real + " - " + Math.abs(imaginary) + "i";
        } else {
            return real + " + " + imaginary + "i";
        }
    }
}

public class ComplexNumberAddition {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        // Prompt the user to enter the real and imaginary parts of the first complex number
        System.out.print("Enter the real part of the first complex number: ");
        double real1 = scanner.nextDouble();
        System.out.print("Enter the imaginary part of the first complex number: ");
        double imaginary1 = scanner.nextDouble();

        // Prompt the user to enter the real and imaginary parts of the second complex number
        System.out.print("Enter the real part of the second complex number: ");
        double real2 = scanner.nextDouble();
        System.out.print("Enter the imaginary part of the second complex number: ");
        double imaginary2 = scanner.nextDouble();

        // Create ComplexNumber objects for the two complex numbers
        ComplexNumber num1 = new ComplexNumber(real1, imaginary1);
        ComplexNumber num2 = new ComplexNumber(real2, imaginary2);

        // Add the two complex numbers
        ComplexNumber sum = ComplexNumber.add(num1, num2);

        // Display the result
        System.out.println("Sum of the two complex numbers: " + sum);

        scanner.close();
    }
}