[Java] MouseEntered - coordonnées

import java.awt.Color;
import java.awt.Container;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.GraphicsConfiguration;
import java.awt.HeadlessException;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionListener;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;

import javax.imageio.ImageIO;
import javax.swing.JFrame;
import javax.swing.JPanel;

/*
 * Created on 25-avr.-2007
 * Author: HackTrack
 */

public class PixelColorizer extends JFrame implements MouseListener, MouseMotionListener {
	private Container c;

	private ImagePanel imagePanel;

	public PixelColorizer() throws HeadlessException {
		super("Pixel colorizer demo");
		initializeComponent();
	}

	private void initializeComponent() {
		setDefaultCloseOperation(EXIT_ON_CLOSE);
		c = getContentPane();
		imagePanel = new ImagePanel();
		imagePanel.addMouseListener(this);
		imagePanel.addMouseMotionListener(this);
		c.add(imagePanel);
	}

	public void mouseClicked(MouseEvent e) {
	}

	public void mousePressed(MouseEvent e) {
	}

	public void mouseReleased(MouseEvent e) {
	}

	public void mouseEntered(MouseEvent e) {
	}

	public void mouseExited(MouseEvent e) {
	}

	public void mouseDragged(MouseEvent e) {
	}

	public void mouseMoved(MouseEvent e) {
		imagePanel.setPixelCoordinate(e.getX(), e.getY());
		imagePanel.repaint();
	}

	class ImagePanel extends JPanel {
		private BufferedImage image;

		private int pixelX;

		private int pixelY;

		public ImagePanel() {
			super();
			this.initializeComponent();

		}

		private void initializeComponent() {
			try {
				image = ImageIO.read(new File("D:/test.jpg"));
			} catch (IOException e) {
				e.printStackTrace();
			}
			setPreferredSize(new Dimension(image.getWidth(), image.getHeight()));
		}

		public void setPixelCoordinate(int x, int y) {
			this.pixelX = x;
			this.pixelY = y;
		}

		public void paint(Graphics g) {
			g.drawImage(image, 0, 0, null);
			int x1 = pixelX-10;
			int y1 = pixelY-10;
			int x2 = pixelX+10;
			int y2 = pixelY+10;
			g.setColor(Color.WHITE);
			g.fillRect(x1,y1,20,20);
			g.setColor(Color.RED);
			g.drawRect(x1,y1,20,20);
		}
	}

	public static void main(String[] args) {
		PixelColorizer demo = new PixelColorizer();
		demo.pack();
		demo.setVisible(true);
	}
}