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Users should be able to monitor processes invoked through Netbeans to see exactly which classes are being used. The idea is to resolve classes being used back to their filenames in the file-system. Reasoning: people often waste days at a time trying to resolve problems caused by having different versions of the same JAR in their classpath. Had they had the ability to see which versions of the library is being used they would have noticed their problem. This is kinda like solving DLL problems for native processes.
Not a core responsibility. Somewhere between profiler (according to summary), debugger and java projects.