Tạo/Hủy System Tray icon

import java.awt.AWTException; import java.awt.Image; import java.awt.SystemTray; import java.awt.Toolkit; import java.awt.TrayIcon; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; public class Test { static Image image = Toolkit.getDefaultToolkit().getImage(“images/tray.gif”); static TrayIcon trayIcon = new TrayIcon(image, “Tester2″); public static void main(String[] a) throws Exception { if (SystemTray.isSupported()) { SystemTray tray = SystemTray.getSystemTray(); trayIcon.setImageAutoSize(true); trayIcon.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { System.out.println(“In here”); trayIcon.displayMessage(“Tester!”, “Some action performed”, TrayIcon.MessageType.INFO); } }); try { tray.add(trayIcon); } catch (AWTException e) { System.err.println(“TrayIcon could not be added.”); } } } }

Hủy bỏ System tray icon

import java.awt.AWTException; import java.awt.Color; import java.awt.Dimension; import java.awt.Graphics; import java.awt.SystemTray; import java.awt.TrayIcon; import java.awt.image.BufferedImage; import java.beans.PropertyChangeEvent; import java.beans.PropertyChangeListener; public class SystemTrayDemo1 { public static void main(String[] args) throws Exception { if (!SystemTray.isSupported()) { return; } SystemTray tray = SystemTray.getSystemTray(); PropertyChangeListener pcl; pcl = new PropertyChangeListener() { public void propertyChange(PropertyChangeEvent pce) { System.out.println(“Property changed = ” + pce.getPropertyName()); TrayIcon[] tia = (TrayIcon[]) pce.getOldValue(); if (tia != null) { System.out.println(“Old tray icon array contents: ”); for (int i = 0; i < tia.length; i++) System.out.println(tia[i]); System.out.println(); } tia = (TrayIcon[]) pce.getNewValue(); if (tia != null) { System.out.println(“New tray icon array contents: ”); for (int i = 0; i < tia.length; i++) System.out.println(tia[i]); System.out.println(); } } }; tray.addPropertyChangeListener(“trayIcons”, pcl); Dimension size = tray.getTrayIconSize(); BufferedImage bi = new BufferedImage(size.width, size.height, BufferedImage.TYPE_INT_RGB); Graphics g = bi.getGraphics(); g.setColor(Color.blue); g.fillRect(0, 0, size.width, size.height); g.setColor(Color.yellow); int ovalSize = (size.width < size.height) ? size.width : size.height; ovalSize /= 2; g.fillOval(size.width / 4, size.height / 4, ovalSize, ovalSize); TrayIcon icon = null; tray.add(icon = new TrayIcon(bi)); Thread.sleep(3000); tray.remove(icon); Thread.sleep(3000); System.exit(0); } }