Q. Do you support the Tomcat/Jakarta JSP engine?
It also mentions on that page they do not support JSP, Enterprise JavaBeans, J2EE
They do support an obsolete version of Jserv, but there are some pretty heavy-duty caveats involved with that one. Maybe you can find a copy of Java Servlets SDK version 2.0 to play around with.
It seems like a dumb idea to program in a kitchen-sink write-only language with the added overhead of late binding. How about switching to something faster, lighter, and more maintainable, like c?