JAVA实现系统托盘

就不解释了，直接看源代码啊......(*^__^*)

/*
 * MainFrame.java
 *
 * Created on 2008年9月20日, 上午11:44
 */

package com.topking.tray.ui;

import java.awt.AWTException;
import java.awt.Image;
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.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.WindowEvent;
import java.awt.event.WindowListener;

import javax.swing.ImageIcon;

/**
 *
 * @author  lzkj
 */
public class MainFrame extends javax.swing.JFrame implements ActionListener, WindowListener{

	// Variables declaration - do not modify
    private javax.swing.JLabel L_img;
    private javax.swing.JLabel L_img2;
    private PopupMenu pop;
    private MenuItem open,close;
    private TrayIcon trayicon;
    // End of variables declaration

    
    /** Creates new form MainFrame */
    public MainFrame() {
    	this.setTitle("Java实现系统托盘示例");
    	this.setLocation(300,300);
        initComponents();
    }

    /** This method is called from within the constructor to
     * initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is
     * always regenerated by the Form Editor.
     */
    @SuppressWarnings("unchecked")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">
    private void initComponents() {
    	    	
//        L_img = new javax.swing.JLabel(new ImageIcon((MainFrame.class).getResource("com/topking/tray/images/netbean1.png")));        
//        L_img2 = new javax.swing.JLabel(new ImageIcon((MainFrame.class).getResource("com/topking/tray/images/netbean2.png")));
        L_img = new javax.swing.JLabel(new ImageIcon(this.getClass().getClassLoader().getResource("com/topking/tray/images/netbean1.png")));        
        L_img2 = new javax.swing.JLabel(new ImageIcon(this.getClass().getClassLoader().getResource("com/topking/tray/images/netbean2.png")));  


        pop = new PopupMenu();
        open = new MenuItem("打开");
        open.addActionListener(this);
        
        close = new MenuItem("关闭");
        close.addActionListener(this);
        
        pop.add(open);
        pop.add(close);       
      
        if(SystemTray.isSupported()){
        	SystemTray tray = SystemTray.getSystemTray();
        	Image icon = this.getToolkit().getImage(this.getClass().getClassLoader().getResource("com/topking/tray/images/user_edit.png"));
        	trayicon = new TrayIcon(icon,"系统托盘示例(java)",pop);
        	trayicon.addMouseListener(new MouseListener(){

				public void mouseClicked(MouseEvent e) {
					// TODO Auto-generated method stub
					if(e.getClickCount()==2){
						openFrame();
					}
				}

				public void mouseEntered(MouseEvent e) {
					// TODO Auto-generated method stub
					
				}

				public void mouseExited(MouseEvent e) {
					// TODO Auto-generated method stub
					
				}

				public void mousePressed(MouseEvent e) {
					// TODO Auto-generated method stub
					
				}

				public void mouseReleased(MouseEvent e) {
					// TODO Auto-generated method stub
					
				}
        		
        	});
        	
        	try {
				tray.add(trayicon);
			} catch (AWTException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
        }

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                .addContainerGap()
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
                    .addComponent(L_img2, javax.swing.GroupLayout.Alignment.LEADING, javax.swing.GroupLayout.DEFAULT_SIZE, 380, Short.MAX_VALUE)
                    .addComponent(L_img, javax.swing.GroupLayout.Alignment.LEADING, javax.swing.GroupLayout.DEFAULT_SIZE, 380, Short.MAX_VALUE))
                .addContainerGap())
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addContainerGap()
                .addComponent(L_img)
                .addGap(29, 29, 29)
                .addComponent(L_img2, javax.swing.GroupLayout.PREFERRED_SIZE, 222, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addContainerGap(39, Short.MAX_VALUE))
        );

        pack();
    }// </editor-fold>

    /**
    * @param args the command line arguments
    */
    public static void main(String args[]) {
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new MainFrame().setVisible(true);
            }
        });
    }

	public void actionPerformed(ActionEvent e) {
		// TODO Auto-generated method stub
		if(e.getSource()==open){
			openFrame();
		}
		if(e.getSource()==close){
			System.exit(-1);
		}
	}

	public void openFrame(){
		this.setVisible(true);
		this.setAlwaysOnTop(true);
	}
	public void windowActivated(WindowEvent arg0) {
		// TODO Auto-generated method stub
		
	}

	public void windowClosed(WindowEvent arg0) {
		// TODO Auto-generated method stub
		this.setVisible(false);
		this.dispose();
	}

	public void windowClosing(WindowEvent arg0) {
		// TODO Auto-generated method stub
		
	}

	public void windowDeactivated(WindowEvent arg0) {
		// TODO Auto-generated method stub
		
	}

	public void windowDeiconified(WindowEvent arg0) {
		// TODO Auto-generated method stub
		
	}

	//窗口最小化
	public void windowIconified(WindowEvent arg0) {
		// TODO Auto-generated method stub		
		this.dispose();
	}

	public void windowOpened(WindowEvent arg0) {
		// TODO Auto-generated method stub
		
	}

    
}

JAR包在附件中……