Mmm . . . worrying. I found I couldn't get rid of Java to start a clean install. What's more, some check they offered said mine was running correctly despite not being able to find it anywhere on the computer.
I'd deleted every folder I could find after the Programs and Features refused to do the job.
Was ver 6.0.240
When I tried to remove it the proper way, the 94mb bit of detritus gives me:
Error 1723 something about a DLL missing to INSTALL the program while I'm trying to rid myself of it.
I wasted more time than I could afford, then abandoned Java.