New to Java

Hello:

I'm having a frustrating problem in school. I am enrolled in a Java class, and we use an old version of JCreator LE. It has no debugger that I am aware of. I would like to install some sort of a debugger, but this presents a problem: since I don't have administrative priviledges, I doubt I can install a program, per se. I can otherwise copy and move files around easily; our school is not too tight on security.

Is there a debugger that does not require a formal installation with administrative priviledges? Preferrably a "visual" (graphical) one? (By necessity, I can subsist on a command line debugger just as well).

Thanks in advance for any help! This would alleviate a major burden for me!