java 托盘 实现二级菜单

package com.zs;
import java.awt.AWTException;
import java.awt.CheckboxMenuItem;
import java.awt.Frame;
import java.awt.Image;
import java.awt.Menu;
import java.awt.MenuItem;
import java.awt.PopupMenu;
import java.awt.SystemTray;
import java.awt.Toolkit;
import java.awt.TrayIcon;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.net.MalformedURLException;

public class MyTaskTray {
    public static void main(String arg[]) throws MalformedURLException {
        final Frame frame = new Frame("");
        frame.setUndecorated(true);
        // 检查系统托盘是否支持
        if (!SystemTray.isSupported()) {
            System.out.println("系统托盘不支持");
            return;
        }

        // 1.创建托盘图标
        Image image = Toolkit.getDefaultToolkit().getImage(
                "view\\config\\resource\\ClientTrayIcon.jpg");

        // 2.停留提示text
        String text = "停留此处提示";

        // 创建弹出菜单
        final PopupMenu popup = createPopupMenu();

        final TrayIcon trayIcon = new TrayIcon(image, text, popup);
        final SystemTray tray = SystemTray.getSystemTray();

        trayIcon.setPopupMenu(popup);
        trayIcon.addMouseListener(new MouseAdapter() {
            @Override
            public void mouseClicked(MouseEvent e) {
                if (e.getButton() == MouseEvent.BUTTON1) {
                    frame.add(popup);
                    popup.show(frame, e.getXOnScreen(), e.getYOnScreen());
                }
            }
        });
        try {
            frame.setResizable(false);
            frame.setVisible(true);
            tray.add(trayIcon);
        } catch (AWTException e) {
            System.out.println("异常:添加托盘图标失败");
        }

    }

    protected static PopupMenu createPopupMenu() {
        final PopupMenu popup = new PopupMenu();
        MenuItem aboutItem = new MenuItem("关于");
        CheckboxMenuItem cb1 = new CheckboxMenuItem("设置1");
        CheckboxMenuItem cb2 = new CheckboxMenuItem("设置2");
        Menu displayMenu = new Menu("测试");
        MenuItem errorItem = new MenuItem("测试4");
        MenuItem warningItem = new MenuItem("测试3");
        MenuItem infoItem = new MenuItem("测试2");
        MenuItem noneItem = new MenuItem("测试1");
        MenuItem exitItem = new MenuItem("退出");
        // Add components to pop-up menu
        popup.add(aboutItem);
        popup.addSeparator();
        popup.add(cb1);
        popup.add(cb2);
        popup.addSeparator();
        popup.add(displayMenu);
        displayMenu.add(errorItem);
        displayMenu.add(warningItem);
        displayMenu.add(infoItem);
        displayMenu.add(noneItem);
        popup.add(exitItem);
        return popup;
    }
}

找了好久，发现中文资料没有这方面的例子（ 也许自己搜的关键词不太对:) ）。

如果在eclipse内直接运行，托盘图标中文出现乱码，解决办法:

在Arguments里的VM arguments添加如下配置

-Dfile.encoding=GBK