JAVA: MouseListener question ???

import java.awt.*;
import java.awt.event.*;

class Main extends Frame implements MouseMotionListener {
Rectangle box = new Rectangle(0, 0, 30, 30);
int curCursor = DEFAULT_CURSOR;

Main() {
super("MouseMotionListener Example" );

addMouseListener(new MouseEventHandler());
addMouseMotionListener(this);
setSize(200, 200);
addNotify();
box.x = getInsets().left;
box.y = getInsets().top;
show();
}

public void paint(Graphics g) {
g.setColor(Color.red);
g.fillRect(box.x, box.y, box.width, box.height);
}

public void mouseDragged(MouseEvent evt) {
if (downPt != null) {
Insets insets = getInsets();

// Keep the box inside the frame inset area.
box.x = Math.max(insets.left, Math.min(evt.getX()-downPt.x,
getSize().width-box.width-insets.right));
box.y = Math.max(insets.top, Math.min(evt.getY()-downPt.y,
getSize().height-box.height-insets.bottom));
repaint();
}
}

public void mouseMoved(MouseEvent evt) {
int oldCursor = curCursor;

if (box.contains(evt.getX(), evt.getY())) {
curCursor = Cursor.HAND_CURSOR;
} else {
curCursor = Cursor.DEFAULT_CURSOR;
}
if (oldCursor != curCursor) {
setCursor(Cursor.getPredefinedCursor(curCursor));
}
}

// Point where the mouse button was pressed relative to the box's origin.
Point downPt;
class MouseEventHandler extends MouseAdapter {
public void mousePressed(MouseEvent evt) {
if (curCursor == Cursor.HAND_CURSOR) {
evt.translatePoint(-box.x, -box.y);
downPt = evt.getPoint();
}
}
public void mouseReleased(MouseEvent evt) {
downPt = null;
}
}

public static void main(String args[]) {
new Main();
}
}

Execute ce code, ca fait ce que tu cherche!