java应用程序-系统托盘

本实例是用来制作应用程序的系统托盘，比如类似qq在窗体的右下角的图标格式。代码直接复制可用。

 1 import java.awt.AWTException;
 2 import java.awt.Image;
 3 import java.awt.MenuItem;
 4 import java.awt.PopupMenu;
 5 import java.awt.SystemTray;
 6 import java.awt.TrayIcon;
 7 import java.awt.event.ActionEvent;
 8 import java.awt.event.ActionListener;
 9 import java.net.URL;
10
11 import javax.swing.*;
12
13 public class SystemTrayDemo extends JFrame{
14
15     /**
16      * 为程序添加系统托盘
17      */
18     private ImageIcon imageIcon;
19     private TrayIcon trayIcon;
20     private PopupMenu popMenu;
21     private MenuItem exit,show;
22     private SystemTray systemTray;
23     //构造方法
24     public SystemTrayDemo() {
25         if (SystemTray.isSupported()) {   //判断是否支持系统托盘
26         //以system.png为图片创建图标,图片system.png在你的工程目录下(eclipse中，其它IDE没有测试)
27             imageIcon = new ImageIcon("images/q.png");
28             trayIcon = new TrayIcon(imageIcon.getImage());  //创建托盘图标
29             trayIcon.setToolTip("系统托盘");
30             popMenu = new PopupMenu();      //创建弹出菜单
31             //创建菜单项
32             exit = new MenuItem("退出");
33             show = new MenuItem("显示主窗体");
34             //添加到popMenu
35             popMenu.add(show);
36             popMenu.add(exit);
37             trayIcon.setPopupMenu(popMenu);
38             systemTray = SystemTray.getSystemTray();  //获得托盘对象
39             try {
40                 systemTray.add(trayIcon);    //添加托盘图标
41             } catch (AWTException e) {
42                 e.printStackTrace();
43             }
44         //添加监听器
45             exit.addActionListener(new ActionListener() {
46                 public void actionPerformed(ActionEvent arg0) {
47                     System.exit(0);
48                 }
49             });
50             show.addActionListener(new ActionListener() {
51
52                 @Override
53                 public void actionPerformed(ActionEvent arg0) {
54                     showFrame();
55                 }
56             });
57         }
58     }
59     //显示窗体
60     public void showFrame() {
61         setVisible(true);
62     }
63
64     //Main method
65     public static void main(String[] args) {
66         JFrame frame = new SystemTrayDemo();
67         frame.setTitle("使用系统托盘");
68         frame.setSize(300,200);
69         frame.setLocationRelativeTo(null);
70         frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);   //注意: 不能设置为JFrame.EXIT_ON_CLOSE,否则会直接退出程序
71
72     }
73
74 }