Command Line Complex Number Driver

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();
        }

    }

}