(Java大学实用教程)第十章例题10例子21

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
class MyWindow extends JFrame implements MouseListener
{
JButton button;
JTextArea textArea;
Container con;
MyWindow()
{
con=getContentPane();
con.setLayout(new FlowLayout());
con.addMouseListener(this);
button=new JButton("我是按钮");
button.addMouseListener(this);
textArea=new JTextArea(8,28);
con.add(button);
con.add(new JScrollPane(textArea));
setBounds(100,100,150,150);
setVisible(true);
validate();
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
public void mousePressed(MouseEvent e)
{
textArea.append("\n鼠标按下,位置:"+"("+e.getX()+","+e.getY()+")");
}
public void mouseReleased(MouseEvent e)
{
if(e.getSource()==button)
{
textArea.append("\n在按钮上鼠标送开,位置:"+"("+e.getX()+","+e.getY()+")");
}
}
public void mouseEntered(MouseEvent e)
{
if(e.getSource()==button)
{
textArea.append("\n鼠标进入按钮,位置:"+"("+e.getX()+","+e.getY()+")");
}
}
public void mouseExited(MouseEvent e)
{
if(e.getSource()==con)
{
textArea.append("\n在鼠标离开容器,位置:"+"("+e.getX()+","+e.getY()+")");
}
}
public void mouseClicked(MouseEvent e)
{
if(e.getModifiers()==InputEvent.BUTTON3_MASK&&e.getClickCount()>=2)
{
textArea.setText("您双击了鼠标右键");
}
}
}
class Example
{
public static void main(String args[])
{
MyWindow win=new MyWindow();
}
}