java程序加到系统托盘的方法

 package swingtest;

 import javax.swing.*;
 import java.awt.*;
 import java.awt.event.ActionEvent;
 import java.awt.event.ActionListener;
 import java.awt.event.MouseAdapter;
 import java.awt.event.MouseEvent;
 import java.io.UnsupportedEncodingException;
 import java.net.URL;
 import java.util.Random;

 public class MainFrame extends JFrame implements ActionListener {

     private static final long serialVersionUID = -7078030311369039390L;
     private JMenu menu;
     private JMenuBar jmenuBar;
     private String[] jmItemName = {"置于托盘", "系统退出"};

     private MainFrame() throws UnsupportedEncodingException {
         super("电话薄");
         init();
         this.setSize(500, 400);
         this.setJMenuBar(jmenuBar);
         this.setLocationRelativeTo(null);

         JButton jbutton = new JButton("test");
         add(jbutton);

         systemTray(jbutton);    //系统托盘
     }

     /**
      * 初始化界面
      */
     private void init() {
         menu = new JMenu("系统窗体");
         for (String s : jmItemName) {
             JMenuItem menuItem = new JMenuItem(s);
             menuItem.addActionListener(this);
             menu.add(menuItem);
         }
         this.jmenuBar = new JMenuBar();
         this.jmenuBar.add(menu);
     }

     @Override
     public void actionPerformed(ActionEvent e) {
         String actions = e.getActionCommand();
         if ("置于托盘".equals(actions)) {
             this.setVisible(false);
         }
         if ("系统退出".equals(actions)) {
             System.exit(0);
         }

     }

     /**
      * 系统托盘图标处理.
      *
      * @param jbutton
      */
     private void systemTray(JButton jbutton) throws UnsupportedEncodingException {
         if (SystemTray.isSupported()) {    //判断系统是否支持托盘功能.
 //            URL resource = this.getClass().getResource("car.jpg");    //获得图片路径

             URL resource = getClass().getClassLoader().getResource("car.jpg");
 //            File targetFile = new File("files/8k.wav");

 //            ClassPathResource classPathResource = new ClassPathResource("static/something.txt");
 //
 //            InputStream inputStream = classPathResource.getInputStream();
             ImageIcon icon = new ImageIcon(resource); //创建图片对象
             JPopupMenu popupMenu = new JPopupMenu(); //创建弹出菜单对象
             JMenuItem itemExit = new JMenuItem("退出系统");    //创建弹出菜单中的退出项
             JMenuItem itemShow = new JMenuItem("显示窗体"); //创建弹出菜单中的显示主窗体项.

             popupMenu.add(itemExit);
             popupMenu.add(itemShow);
             TrayIcon trayIcon = new TrayIcon(icon.getImage(), "电话薄系统");
             SystemTray sysTray = SystemTray.getSystemTray();

             try {
                 sysTray.add(trayIcon);
             } catch (AWTException ignored) {
             }
             trayIcon.addMouseListener(new MouseAdapter() {
                 @Override
                 public void mouseReleased(MouseEvent e) {
                     if (e.isPopupTrigger()) {
                         popupMenu.setLocation(e.getX(), e.getY());
                         popupMenu.setInvoker(popupMenu);
                         popupMenu.setVisible(true);
                     }
                 }
             });
             //给窗体最小化添加事件监听.
             itemShow.addActionListener(e -> {
                 setVisible(true);

             });
             //给退出像添加事件监听
             itemExit.addActionListener(e -> {
 //                System.exit(0);
                 sysTray.remove(trayIcon);
                 dispose();
             });
             int count = 0;
             jbutton.addActionListener(e -> {
                 TrayIcon trayIcon4 = new TrayIcon(icon.getImage(), "电话薄系统");
                 try {
                     sysTray.add(trayIcon4);
                 } catch (AWTException ex) {
                     ex.printStackTrace();
                 }
             });

         }
     }

     /**
      * 主方法
      *
      * @param args sdf
      */
     public static void main(String[] args) throws UnsupportedEncodingException {
         new MainFrame().setVisible(true);
     }
 }