JAVA开发系统托盘程序

参考文章《New System Tray Functionality in Java SE 6》，网址 http://java.sun.com/developer/technicalArticles/J2SE/Desktop/javase6/systemtray/ 。

JDK必须要在 1.6 版本。
最近项目中要实现定时任务常驻系统，能够同时有一个比较友好的操作方式提供给最终用户，于是考虑采用 System Tray 。刚好项目中使用的也是 JDK1.6 ，于是参考上面文章的例子，简单修改一下，增加自己需要的功能即可。

转帖代码如下：

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 java.awt.event.MouseEvent;
import java.awt.event.MouseListener;

public class SystemTrayTest
{

public SystemTrayTest()
{

final TrayIcon trayIcon;

if (SystemTray.isSupported()) {

SystemTray tray = SystemTray.getSystemTray();
Image image = Toolkit.getDefaultToolkit().getImage("tray.gif");

MouseListener mouseListener = new MouseListener() {

public void mouseClicked(MouseEvent e) {
System.out.println("Tray Icon - Mouse clicked!");
}
public void mouseEntered(MouseEvent e) {
System.out.println("Tray Icon - Mouse entered!");
}
public void mouseExited(MouseEvent e) {
System.out.println("Tray Icon - Mouse exited!");
}
public void mousePressed(MouseEvent e) {
System.out.println("Tray Icon - Mouse pressed!");
}
public void mouseReleased(MouseEvent e) {
System.out.println("Tray Icon - Mouse released!");
}

};

ActionListener exitListener = new ActionListener() {
public void actionPerformed(ActionEvent e) {
System.out.println("Exiting...");
System.exit(0);
}
};

PopupMenu popup = new PopupMenu();
MenuItem defaultItem = new MenuItem("Exit");
defaultItem.addActionListener(exitListener);
popup.add(defaultItem);

trayIcon = new TrayIcon(image, "Tray Demo", popup);

ActionListener actionListener = new ActionListener() {
public void actionPerformed(ActionEvent e) {
trayIcon.displayMessage("Action Event",
"An Action Event Has Been Peformed!",
TrayIcon.MessageType.INFO);
}
};

trayIcon.setImageAutoSize(true);
trayIcon.addActionListener(actionListener);
trayIcon.addMouseListener(mouseListener);

//    Depending on which Mustang build you have, you may need to uncomment
//    out the following code to check for an AWTException when you add
//    an image to the system tray.

//    try {
try {
tray.add(trayIcon);
} catch (AWTException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
//    } catch (AWTException e) {
//        System.err.println("TrayIcon could not be added.");
//    }

} else {
System.err.println("System tray is currently not supported.");
}
}

/**
* @param args the command line arguments
*/
public static void main(String[] args)
{
SystemTrayTest main = new SystemTrayTest();
}

}