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Editorial Team
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Asked: 2026-05-15T09:53:52+00:00

How to/What is a good library, to create a fading indicator message in Java

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How to/What is a good library, to create a fading indicator message in Java like that of Outlook when you get a message, or Ubuntu/Gnome when you’ve connected to a network?

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  1. Editorial Team

    Java 1.6 has a TrayIcon class that can be used to display notification messages.

    SystemTray tray = SystemTray.getSystemTray();
Image image = Toolkit.getDefaultToolkit().getImage("tray.gif");
TrayIcon trayIcon = new TrayIcon(image, "Tray Demo");
tray.add(trayIcon);
trayIcon.displayMessage("Hello, World", "notification demo", MessageType.INFO);

    Here’s the result:
    TrayIcon on Windows
    TrayIcon on Linux

    On Linux you may also have a little program called notify-send. It makes it easy to invokes the standard freedesktop.org notification system from the shell. You can also run it from Java.

    String[] notifyCmd = {"notify-send", "Hello, World!"};
Runtime.getRuntime().exec(notifyCmd);

    I had to apt-get install libnotify-bin to get this on my Ubuntu box.

    notify-send

    I’ve tested these things on Windows 7 and Ubuntu 9.10. In each case the notification disappeared after some time which is I suppose the fading indicator effect that you want.

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