I agree that Java is not the best tool for things like analyzing mmap'ed data. Java replaces C++ by being better in some things, not all. I would go further an

I agree that Java is not the best tool for things like analyzing mmap'ed data. Java replaces C++ by being better in some things, not all. I would go further and say that if your job is analyzing terabytes of memory-mapped binary files, maybe C++ is not optimal either, and investing in specialized languages like Shakti/K would pay off quickly.