I want to be able to comple .java files at my work. but the computers don't have "javac" and I don't have the prividleges to install things

at home i use ubuntu (linux) the computers at my work are running XP

i read about how to install jdk onto a flash drive, but it involved using a "setup.exe" and linux doesn't run it. I tried using wine, but I coundn't get wine to find the usb drive.

if there is another way to compile .java files w/o being able to install, please let me know.

any ideas, suggestions, or websites would be helpful.