A nameless university is using Oracle’s jinitiator applets on some management web sites. Jinitiator is just Oracle’s version of the Java JVM, but you can use any recent JVM and be happy. The trick under Linux is to fool the browser into interpreting the mime-type “application/x-jinit-applet” (specific to Oracle) as just an ordinary applet. As it turns out, you just have to edit a small text file called pluginreg.dat.
Reference: Oracle Apps on Linux – AVallark.