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    <p>Use <a href="http://docs.oracle.com/javase/6/docs/api/java/awt/SystemTray.html" rel="nofollow noreferrer">java.awt.SystemTray</a>. I've confirmed it works on OS X Lion. According to <a href="https://stackoverflow.com/questions/3381178/swt-systemtray-in-osx">this question</a>, it's also possible to do with SWT.</p> <p>Example:</p> <pre><code>import java.awt.AWTException; import java.awt.Image; import java.awt.MenuItem; import java.awt.PopupMenu; import java.awt.SystemTray; import java.awt.Toolkit; import java.awt.TrayIcon; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.net.MalformedURLException; import java.net.URL; public class MenuBarIconTest { public static void main(String[] args) throws MalformedURLException { TrayIcon trayIcon = null; if (SystemTray.isSupported()) { // get the SystemTray instance SystemTray tray = SystemTray.getSystemTray(); // load an image Image image = Toolkit.getDefaultToolkit().getImage(new URL("http://cdn1.iconfinder.com/data/icons/Hypic_Icon_Pack_by_shlyapnikova/16/forum_16.png")); // create a action listener to listen for default action executed on the tray icon ActionListener listener = new ActionListener() { public void actionPerformed(ActionEvent e) { System.out.println("action"); // execute default action of the application // ... } }; // create a popup menu PopupMenu popup = new PopupMenu(); // create menu item for the default action MenuItem defaultItem = new MenuItem("Do the action"); defaultItem.addActionListener(listener); popup.add(defaultItem); /// ... add other items // construct a TrayIcon trayIcon = new TrayIcon(image, "Tray Demo", popup); // set the TrayIcon properties trayIcon.addActionListener(listener); // ... // add the tray image try { tray.add(trayIcon); } catch (AWTException e) { System.err.println(e); } // ... } else { // disable tray option in your application or // perform other actions //... } // ... // some time later // the application state has changed - update the image if (trayIcon != null) { //trayIcon.setImage(updatedImage); } } } </code></pre>
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