最小化时隐藏，在图标上点右右键选择显示窗口时，让窗口显示出来
import java.awt.AWTException;
import java.awt.Image;
import java.awt.MenuItem;
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.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;
public class SystemTrayTest extends Thread {
TrayIcon st;
SystemTray tray =null;
//javax.swing.Popup p;
java.awt.PopupMenu popup;
MenuItem mi1,mi2;
msgbox m=null;
public void getm(msgbox m){
this.m=m;
}
public void run() {
// TODO Auto-generated method stub
super.run();
if (SystemTray.isSupported()) {
// get the SystemTray instance
tray = SystemTray.getSystemTray();
// load an image
String test = System.getProperty("user.dir").replace('\\', '/');
BufferedImage src = null;
try {
src = ImageIO.read(new File(test + "\\logo.jpg"));
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} // 读入源图像
//
Image image = Toolkit.getDefaultToolkit().getImage(test + "\\logo.jpg");
// create a action listener to listen for default action executed on
// the tray icon
popup=new java.awt.PopupMenu();
mi1=new MenuItem("显示窗口");
mi2=new MenuItem("－－－");
popup.add(mi1);
popup.add(mi2);
mi1.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
m.setVisible(true);
System.out.println("open");
}
});
mi2.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
//System.out.println("close");
//System.exit(0);
}
});
st = new TrayIcon(image, "Tray Demo", popup);
try {
tray.add(st);
} catch (AWTException e) {
e.printStackTrace();
}
}
}
public static void main(String[] args) {
new SystemTrayTest().start();
}
}
//使窗口最小化，并隐藏
public void windowIconified(WindowEvent e) {
System.out.print("sssssss");
jf.setVisible(false);
System.out.print(""+e+" "+e.getClass()+" "+e.getNewState());
}