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);
}}
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);
}}
运行不了,好像没有main也不是没有appet什么的
里头加上<applet code="你的类名.class" >
</applet>
然后运行这个HTML文件看看
msg = "鼠标进来";
repaint();
} public void mouseExited(MouseEvent e) {
msg = "鼠标离开";
repaint();
}Event-->MouseEvent
返回值为void
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);
}}