import java.awt.AWTException;
import java.awt.MenuItem;
import java.awt.PopupMenu;
import java.awt.SystemTray;
import java.awt.TrayIcon;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

import javax.swing.ImageIcon;
import javax.swing.JFrame;

public class TestTray extends JFrame {

 private static final long serialVersionUID = -7078030311369039390L;

 public TestTray() {
 this.setSize(500, 400);

 this.setLocationRelativeTo(null);// 把窗體設(shè)置在屏幕中間

 systemTray(); // 設(shè)置系統(tǒng)托盤

 // 添加關(guān)閉按鈕事件，關(guān)閉時(shí)候?qū)嵸|(zhì)是把窗體隱藏
 this.addWindowListener(new WindowAdapter() {
  @Override
  public void windowClosing(WindowEvent e) {
  TestTray.this.setVisible(false);
  }
 });
 this.setVisible(true);
 }

 /**
 * 處理系統(tǒng)托盤
 */
 private void systemTray() {
 if (SystemTray.isSupported()) { // 判斷系統(tǒng)是否支持托盤功能.
  // 創(chuàng)建托盤右擊彈出菜單
  PopupMenu popupMenu = new PopupMenu();
  
  //創(chuàng)建彈出菜單中的退出項(xiàng)
  MenuItem itemExit = new MenuItem("退出系統(tǒng)");
  itemExit.addActionListener(new ActionListener() {
   @Override
   public void actionPerformed(ActionEvent e) {
    System.exit(0);
   }
   });
  popupMenu.add(itemExit);
  
  //創(chuàng)建托盤圖標(biāo)
  ImageIcon icon = new ImageIcon("img/icon.png"); // 創(chuàng)建圖片對(duì)象
  TrayIcon trayIcon = new TrayIcon(icon.getImage(), "測(cè)試系統(tǒng)托盤",
   popupMenu);
  trayIcon.addActionListener(new ActionListener() {
  @Override
  public void actionPerformed(ActionEvent e) {
   TestTray.this.setVisible(true);
  }
  });
  
  //把托盤圖標(biāo)添加到系統(tǒng)托盤
  //這個(gè)可以點(diǎn)擊關(guān)閉之后再放到托盤里面，在此是打開程序直接顯示托盤圖標(biāo)了
  try {
  SystemTray.getSystemTray().add(trayIcon);
  } catch (AWTException e1) {
  e1.printStackTrace();
  }
 }
 }

 public static void main(String[] args) {
 new TestTray();
 }
}