jCapture is an applet to capture screenshots or record audio/screen
jCapture is a Java applet which allows to capture screen shots or record screen activity and audio and upload them directly to your webapplication (wiki, CMS, etc.) With jCapture you can quickly create documentation pages for UI-rich software products.
It is built-in to Tiki 10 and is available via a plug-in for DokuWiki, saving directly to the media manager.
JetClass, Java net-class application, allows virtual lectures to be held by teachers and students located in front of their computers, somewhere around the globe. It's written in Pure Java, relying on CORBA for network communications.