java程序如何实现右下角系统托盘图标显示

 刚刚学习java，看到程序右下角图标的显示感觉很新鲜，于是上网查找一些资料。自己写了一个简单的程序实现了一下。

import java.awt.AWTException;  
import java.awt.Image;  
import java.awt.MenuItem;  
import java.awt.PopupMenu;  
import java.awt.SystemTray;  
import java.awt.Toolkit;  
import java.awt.TrayIcon;  
import java.awt.event.ActionEvent;  
import java.awt.event.ActionListener;  
  
import javax.swing.JFrame;  
  
  
public class MySystemTray extends JFrame{  
      
    public MySystemTray() {  
        init();  
    }  
      
    public void init() {  
          
        this.setSize(300, 200);  
        this.setLocationRelativeTo(null);  
        this.setTray();  
        this.setVisible(true);  
    }  
      
    //添加托盘显示：1.先判断当前平台是否支持托盘显示  
    public void setTray() {  
          
        if(SystemTray.isSupported()){//判断当前平台是否支持托盘功能  
            //创建托盘实例  
            SystemTray tray = SystemTray.getSystemTray();  
            //创建托盘图标：1.显示图标Image 2.停留提示text 3.弹出菜单popupMenu 4.创建托盘图标实例  
            //1.创建Image图像  
            Image image = Toolkit.getDefaultToolkit().getImage("trayIconImage/clientIcon.jpg");  
            //2.停留提示text  
            String text = "MySystemTray";  
            //3.弹出菜单popupMenu  
            PopupMenu popMenu = new PopupMenu();  
            MenuItem itmOpen = new MenuItem("打开");  
            itmOpen.addActionListener(new ActionListener(){  
                public void actionPerformed(ActionEvent e) {  
                    Show();  
                }                 
            });  
            MenuItem itmHide = new MenuItem("隐藏");  
            itmHide.addActionListener(new ActionListener(){  
                public void actionPerformed(ActionEvent e) {  
                    UnVisible();  
                }  
            });  
            MenuItem itmExit = new MenuItem("退出");  
            itmExit.addActionListener(new ActionListener(){  
                public void actionPerformed(ActionEvent e) {  
                    Exit();  
                }  
            });  
            popMenu.add(itmOpen);  
            popMenu.add(itmHide);  
            popMenu.add(itmExit);  
              
            //创建托盘图标  
            TrayIcon trayIcon = new TrayIcon(image,text,popMenu);  
            //将托盘图标加到托盘上  
            try {  
                tray.add(trayIcon);  
            } catch (AWTException e1) {  
                e1.printStackTrace();  
            }  
        }  
    }  
      
    //内部类中不方便直接调用外部类的实例（this不能指向）  
    public void UnVisible() {  
        this.setVisible(false);  
    }  
    public void Show() {  
        this.setVisible(true);  
    }  
    public void Exit() {  
        System.exit(0);  
    }  
      
      
    public static void main(String[] args) {  
        new MySystemTray();  
    }  
}