JDK6 新增窗口最小化至托盘_jdk6 jframe.setextendedstate linux 无效-优快云博客

本文介绍如何使用Java编程语言，在应用最小化时在系统托盘区域显示图标，利用JDK6引入的API实现，通过代码示例详细解释了系统的操作流程。

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Java做的应用程序，过去要在win平台上实现最小化时在系统托盘区域产生一个图标，必须得用JNI调用OS的库函数才行。但是在JDK6中，终于加入了相应的API。不多说，例子如下：

import java.awt.AWTException;
import java.awt.Image;
import java.awt.SystemTray;
import java.awt.TrayIcon;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;

import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;

public class MinExp extends JFrame {

/**
* Declare private variables
*/
private JButton testBtn;
    private SystemTray systemTray;
    private Image icon;
    private TrayIcon trayIcon;
    private JPanel backGroud;

    /**
     * Constructor
     */
public MinExp()
{
  testBtn = new JButton("Minimize");
  backGroud = new JPanel();

  setDefaultCloseOperation(EXIT_ON_CLOSE);
  setSize(200, 200);

  testBtn.addMouseListener(new MouseAdapter(){

   public void mouseClicked(MouseEvent evt)
   {
    setExtendedState(JFrame.ICONIFIED);
          dispose();
          systemTray= SystemTray.getSystemTray();
          try{
          icon = new ImageIcon(this.getClass().getClassLoader().getResource("world.jpg")).getImage();
          trayIcon = new TrayIcon(icon, "WorldClock");
          systemTray.add(trayIcon);
          }catch(AWTException e)
          {
          e.printStackTrace();
          }
          trayIcon.addMouseListener(new MouseAdapter() {
              public void mouseClicked(MouseEvent e) {
               if (e.getClickCount() == 2)
               {
                setExtendedState(JFrame.NORMAL);
                systemTray.remove(trayIcon);
               }
               setVisible(true);
              }
          });
   }
  });

  backGroud.add(testBtn);
  this.add(backGroud);
}