HW # 9 (MyProgrammingLab Chapter 13: Project 71043)

/*
 * Name: Lu Liu
 * Date: 3/03/2016
 * Course Number: CSC-112
 * Course Name: Intermediate Topics in Java Programming
 * Email: lliu0001@student.stcc.edu
 *
 * Assignment: HW # 9 (MyProgrammingLab Chapter 13: Project 71043)
 * Programe Description:
 * Define a class  named  ComparableCircle
 * Test ComparableCircle class in a Driver class
 */

/*—————————————Driver Class———————------------————*/
import java.util.*;
public class Driver extends Circle {

    public static void main(String[] args) {

        Scanner input = new Scanner(System.in);
        System.out.println("Enter radius of first circle: ");
        double radius1 = input.nextDouble();

        System.out.println("Enter radius of second circle: ");
        double radius2 = input.nextDouble();

        ComparableCircle circle1 = new ComparableCircle(radius1);
        ComparableCircle circle2 = new ComparableCircle(radius2);

        System.out.println(circle1.compareTo(circle2));
    }
}

/*————————————ComparableCircle Class————————————————*/
class ComparableCircle extends Circle {

    public ComparableCircle(double radius) {
        super(radius);
        }

    public int compareTo(ComparableCircle o) {
        if (this.getArea() > o.getArea())
            return 1;
        else if (this.getArea() < o.getArea())
            return -1;
        else
            return 0;
    }
}