import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.geom.Ellipse2D;

import javax.swing.JFrame;
import javax.swing.JPanel;


@SuppressWarnings("serial")
public class EggExample extends JPanel {
	public static void main(String[] args) {
		JFrame frame = new JFrame();
		frame.setTitle("Egg Example");
		frame.setSize(300, 300);
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		frame.setVisible(true);		
		frame.getContentPane().add(new EggExample());		
	}

	private Ellipse2D.Double egg;
	private static final double EGG_WIDTH = 30;
	private static final double EGG_HEIGHT = 50;	
	
	public EggExample()
	{ 	egg = new Ellipse2D.Double(0, 0, EGG_WIDTH, EGG_HEIGHT);
  		// add mouse click listener         
   		MouseClickListener listener = new MouseClickListener();
   		addMouseListener(listener);   		
	}

	public void paint(Graphics g) 
	{	Graphics2D g2 = (Graphics2D) g;
		g.clearRect(0, 0, 300, 300);		// Clear the window
		g2.draw(egg);		
	}

	// inner class definition
	private class MouseClickListener extends MouseAdapter
	{	public void mouseClicked(MouseEvent event)
		{	int mouseX = event.getX();
			int mouseY = event.getY();
			egg.setFrame(mouseX - EGG_WIDTH / 2,
					mouseY - EGG_HEIGHT / 2, EGG_WIDTH, EGG_HEIGHT);
			repaint();
	     }
	 }
}