不知哪里错了，请高手指点
import java.awt.*;
import java.awt.event.*;
import java.applet.*;

public class Mouseevent extends Applet implements MouseListener{

String msg= "来点我 ";
public void init(){
addMouseListener(this);
}
public boolean mouseEntered(Event e){
msg= "鼠标进来 ";
repaint();
return true;
}
public boolean mouseExited(Event e){
msg= "鼠标离开 ";
repaint();
return true;
}
public void mouseClicked(MouseEvent e){}
public void mouseReleased(MouseEvent e){}
public void mousePressed(MouseEvent e){}
public void paint(Graphics g){
g.setColor(Color.red);
g.setFont(new Font( "Dialogs ",0,40));
g.drawString(msg, 4, 60);
}

}


[解决办法]
public void mouseEntered(MouseEvent e) {
msg = "鼠标进来 ";
repaint();
}

public void mouseExited(MouseEvent e) {
msg = "鼠标离开 ";
repaint();
}

Event--> MouseEvent
返回值为void
[解决办法]
import java.awt.*;
import java.awt.event.*;
import java.applet.*;

public class Test extends Applet implements MouseListener{

String msg= "来点我 ";
public void init(){
addMouseListener(this);
}
public void mouseEntered(MouseEvent e){
msg= "鼠标进来 ";
repaint();
//return true;
}
public void mouseExited(MouseEvent e){
msg= "鼠标离开 ";
repaint();
//return true;
}
public void mouseClicked(MouseEvent e){}
public void mouseReleased(MouseEvent e){}
public void mousePressed(MouseEvent e){}
public void paint(Graphics g){
g.setColor(Color.red);
g.setFont(new Font( "Dialogs ",0,40));
g.drawString(msg, 4, 60);
}

}