Complex.java

/*
 * Name: Janan Patel
 * Date: 2/11/2021
 * Course Number: CSC-112-D01
 * Course Name: Computer Science
 * Problem Number: 3
 * Email: jkpatel2001@student.stcc.edu
 * Short Description of the Problem: Complex numbers
 */

package Complex;

public class Complex {

	private double real;
	private double imag;

	public Complex(double real, double imag) {

		this.real = real;
		this.imag = imag;

	}

	public Complex(double real) {

		this.real = real;
		this.imag = 0;

	}

	public Complex() {

		this.real = 0;
		this.imag = 0;

	}

	public Complex add(Complex c2) {

		double real = this.real + c2.real;
		double imag = this.imag + c2.imag;

		return new Complex(real, imag);

	}

	public Complex subtract(Complex c2) {
		Complex a = this;

		return a.add(c2.negate());
	}

	public Complex multiply(Complex c2) {

		double real = (this.real * c2.real) - (this.imag * c2.imag);
		double imag = (this.real * c2.imag) + (this.imag * c2.real);

		return new Complex(real, imag);

	}

	public Complex divide(Complex c2) {

		double real = ((this.real * c2.real) + (this.imag * c2.imag)) / ((c2.real * c2.real) + (c2.imag * c2.imag));
		double imag = ((this.imag * c2.real) - (this.real * c2.imag)) / ((c2.real * c2.real) + (c2.imag * c2.imag));

		return new Complex(real, imag);

	}

	public double abs() {

		double absolutevalue = Math.sqrt((this.real * this.real) + (this.imag * this.imag));

		return absolutevalue;

	}

	public Complex negate() {

		return new Complex(-this.real, -this.imag);

	}

	public Complex conjugate() {

		return new Complex(this.real, -this.imag);

	}

	public double distance(Complex c2) {

		double distance = Math.sqrt(
				((this.real - c2.real) * (this.real - c2.real)) + ((this.imag - c2.imag) * (this.imag - c2.imag)));
		return distance;

	}

	public boolean equals(Complex c2) {

		boolean x = Math.abs(this.distance(c2) / Math.max(this.abs(), c2.abs())) < 1E-6;
		if (x == true) {
			return true;
		} else
			return false;

	}

	public boolean greaterThan(Complex c2) {
		boolean isOrisnt;
		if (this.abs() > c2.abs()) {
			isOrisnt = true;
		} else
			isOrisnt = false;
		return isOrisnt;

	}

	public boolean lessThan(Complex c2) {

		boolean isOrisnt;
		if (this.abs() < c2.abs()) {
			isOrisnt = true;
		} else
			isOrisnt = false;
		return isOrisnt;
	}

	public String toString() {

		return this.real + " + (" + this.imag + " i)";

	}

}

ComplexNumberDriver.java

/*
 * Name: Janan Patel
 * Date: 2/11/2021
 * Course Number: CSC-112-D01
 * Course Name: Computer Science
 * Problem Number: 3
 * Email: jkpatel2001@student.stcc.edu
 * Short Description of the Problem: Complex numbers
 */

package Complex;

import java.util.Scanner;

public class ComplexNumberDriver {

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

		double real;
		double imag;

		while (true) {
			System.out.print("Enter Real And Imaginary Components of Complex Number 1: ");
			real = sc.nextDouble();
			imag = sc.nextDouble();
			Complex c1 = new Complex(real, imag);

			System.out.print("Enter Real And Imaginary Components of Complex Number 2: ");
			real = sc.nextDouble();
			imag = sc.nextDouble();
			Complex c2 = new Complex(real, imag);

			sc.nextLine();

			Complex plus = c1.add(c2);
			Complex minus = c1.subtract(c2);
			Complex times = c1.multiply(c2);
			Complex quot = c1.divide(c2);
			System.out.println("c1      = " + c1);
			System.out.println("c2      = " + c2);
			System.out.println("c1 + c2 = " + plus);
			System.out.println("c1 - c2 = " + minus);
			System.out.println("c1 * c2 = " + times);
			System.out.println("c1 / c2 = " + quot);
			System.out.println("-c1     = " + c1.negate());
			System.out.println("-c2     = " + c2.negate());
			System.out.println("Conj c1 = " + c1.conjugate());
			System.out.println("Conj c2 = " + c2.conjugate());
			System.out.println("|c1|    = " + c1.abs());
			System.out.println("|c2|    = " + c2.abs());
			System.out.println("Dist    = " + c1.distance(c2));
			System.out.println("==?     = " + c1.equals(c2));
			System.out.println(">?      = " + c1.greaterThan(c2));
			System.out.println("<?      = " + c1.lessThan(c2));

			System.out.print("Do again? ");
			if (!sc.next().toUpperCase().equals("Y"))
				break;
			sc.nextLine();
		}

	}

}