Answer to Question #200541 in Java | JSP | JSF for Aniket Nayak

Question

Define a class called Complex with instance variables real, imag and instance methods

setData(), display(), add(). Write a Java program to add two complex numbers.

The prototype of add method is: public Complex add(Complex, Complex).

Answer 1

import java.util.Scanner;


class Complex {
	private double real; // the real part
	private double imag; // the imaginary part
	
	/**
	 * Constructor
	 */
	public Complex() {}
	/**
	 * Sets Data
	 * @param real
	 * @param imag
	 */
	public void setData(double real, double imag) {
		this.real = real;
		this.imag = imag;
	}
	/**
	 * Displays Complex number
	 */
	public void display() {
		if(imag>0) {
			System.out.println(String.format("%g + %gi", real, imag));
		}else {
			System.out.println(String.format("%g - %gi", real, Math.abs(imag)));
		}
	}
	/**
	 * add two Complex numbers
	 * @param Complex1
	 * @param Complex2
	 * @return
	 */
	public Complex add(Complex Complex1, Complex Complex2) {
		double sumReal = Complex1.getReal() + Complex2.getReal();
        double sumImag = Complex1.getImag() + Complex2.getImag();
		Complex complexSum=new Complex();
		complexSum.setData(sumReal, sumImag);
		return complexSum;
	}
	
	/**
	 * @return the real
	 */
	public double getReal() {
		return real;
	}
	/**
	 * @param real the real to set
	 */
	public void setReal(double real) {
		this.real = real;
	}
	/**
	 * @return the imag
	 */
	public double getImag() {
		return imag;
	}
	/**
	 * @param imag the imag to set
	 */
	public void setImag(double imag) {
		this.imag = imag;
	}




}


public class Q200541 {


	public static void main(String[] args) {
		
		// Scanner object
		Scanner in = new Scanner(System.in);
		System.out.print("Enter the real part of Complex 1: ");
		double real=in.nextDouble(); 
		System.out.print("Enter the imaginary part of Complex 1: ");
		double imag=in.nextDouble();
		Complex Complex1=new Complex();
		Complex1.setData(real, imag);
		
		System.out.print("Enter the real part of Complex 2: ");
		real=in.nextDouble(); 
		System.out.print("Enter the imaginary part of Complex 2: ");
		imag=in.nextDouble();
		Complex Complex2=new Complex();
		Complex2.setData(real, imag);
		
		Complex sumComplex=Complex1.add(Complex1, Complex2);
		System.out.println("Complex 1: ");
		Complex1.display();
		System.out.println("Complex 2: ");
		Complex2.display();
		System.out.println("Complex Sum: ");
		sumComplex.display();
		// close Scanner
		in.close();
	}
}