How JVM works when two same jar be included in classpath

Question

It was a mistake of my co-worker: there was a jar named test.jar and he has fixed a bug of it. Then he re-compile the code and built a new jar named testnew.jar The proble

Answer 1

Yeah, by default it uses classes from first jar. That's why you have to check library directory for duplicates. Happend so many times for me and my colleagues.