CIS 260 Circle.java

Code

/*
    Circle.java
    CIS 260
    2005-02-09
    David Klick

    This is a subclass of the Shape class. To create an
    object from this class, the abstract methods draw
    and area had to be implemented.
*/

import java.awt.Graphics;

public class Circle extends Shape {
    private int radius;
    public Circle() {
        super();
        setRadius(1);
    }
    public Circle(int x, int y, int r) {
        super(x, y);
        setRadius(r);
    }
    public Circle(Circle c) {
        super(c.origin);
        setRadius(c.radius);
    }
    public void setRadius(int r) { radius = r<0 ? -r : r; }
    public double area() { return Math.PI * radius * radius; }
    public int getRadius() { return radius; }
    public void draw(Graphics g) {
        g.drawOval(origin.x-radius, origin.y-radius, radius * 2, radius * 2);
    }
    public String toString() {
        return origin + ", r=" + radius;
    }
}