I would call Java hardcore class-based/design pattern programming more than hardcore OOP. If you want hardcore OOP try smalltalk or Common Lisp's CLOS. However

I would call Java hardcore class-based/design pattern programming more than hardcore OOP. If you want hardcore OOP try smalltalk or Common Lisp's CLOS. However I agree that going from Python to Java can seem like hardcore OOP. It's tempting to argue that hardcore OOP is relative, but I like to go by Alan Kay's definition which is pretty easy to prove/disprove.