import javax.swing.*;import java.awt.*;/** Oval Supplier Class  * Author: David D. Riley * Date: April, 2004 */public class Oval extends JComponent  {    /** post:   getX() == x  and  getY() == y     *          and  getWidth() == w  and getHeight() == h     *          and  getBackground() == Color.black     */	public Oval(int x, int y, int w, int h)  {        super();		setBounds(x, y, w, h);        setBackground(Color.black);	}    /** post:   this method draws a filled Oval     *          and  the upper left corner of the bounding rectangle is (getX(), getY())      *          and  the oval's dimensions are getWidth() and getHeight()     *          and  the oval's color is getBackground()     */    public void paint(Graphics g)  {        g.setColor( getBackground() );        g.fillOval(0, 0, getWidth()-1, getHeight()-1);        paintChildren(g);   }}