Can I run more than one JVM? If yes then how can I find a particular class is loaded on which JVM?
It's not entirely clear what you mean, but:
javaprocess, whether of the same JVM version or different ones
Unless you're running a debugging agent or something similar, I don't know of any way to ask a JVM process whether it's loaded a particular class. It seems a bit of an odd requirement - why do you want to do this?