JTray - Java System Tray API For Windows - Version JTray lets Java developers add icons to the Windows System Tray (Taskbar Notification Status Area). It allows Java applications to detect clicks and display Java AWT and Swing Components as pop-ups, giving developers the ability to modify the look and feel and add powerful menu items. Several image formats can be used to add an icon: gif, ico, jpg, png, and java.awt.Image objects.