//程序如下：

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class FocusApplet extends JApplet
{
JPanel contentPanel=(JPanel)this.getContentPane();
JPanel touchPanel=new JPanel();
JLabel touchLabel=new JLabel("Active Region");
MyMouseListener mml=new MyMouseListener();
MyMouseMotionListener mmml=new MyMouseMotionListener();

public void init()
{
touchLabel.setHorizontalAlignment(SwingConstants.CENTER);
touchPanel.setBackground(Color.white);
touchPanel.add(touchLabel);
touchPanel.addMyMouseListener(mml);
touchPanel.addMyMouseMotionListener(mmml);
contentPanel.setLayout(new GridLayout(2,0));
contentPanel.add(touchPanel);
}
class MyMouseListener extends MouseAdapter
{
public void mouseEntered(MouseEvent e)
{
showStatus("Mouse entered the Active Region");
}
public void mouseExited(MouseEvent e)
{
showStatus("Mouse exited the Active Region");
}
}
class MyMouseMotionListener extends MouseAdapter
{
public void mouseMoved(MouseEvent e)
{
showStatus("Mouse moved to locatio:x:"
+e.getX()+"y:"+e.getY());
}
public void mouseDragged(MouseEvent e)
{
showStatus("Mouse dragged to locatio:x:"
+e.getX()+"y:"+e.getY());
}
}
}

touchPanel.addMyMouseListener(mml);改为touchPanel.addMouseListener(mml);
touchPanel.addMyMouseMotionListener(mmml);改为touchPanel.addMouseMotionListener(mmml);
另外class MyMouseMotionListener extends MouseAdapter改为
class MyMouseMotionListener extends MouseMotionAdapter。因为MouseMotionListener派生自MouseMotionAdapter类。

touchPanel.addMyMouseListener(mml);
touchPanel.addMyMouseMotionListener(mmml);

这两个方法没有啊

yhc0125(小程)　
说的很对！