Wassup let's you know what's up with your Java environment.
It will tell you the System Properties, as many as the
Security system will let you peek at. This includes such
things as which JVM is running, which version of Java, which
vendor. It may be run as either an applet or an application.
When you run Wassup as an application it shows you
considerably more information. The Java sandbox considers it
a security risk to reveal that information to an Applet. As
an application, you can see all the possible System
Properties. When you run as an unsigned Applet, your view is
much more limited. If you OK the Java sandbox security override, it will
let you view the restricted properties.