Thinking of it, SOAP is the most Java-like thing taken to the extreme that I can think off.

Needlessly complex, dozens of imbricated layers that no one knows why they even exist, cult of "the library and server will do it for you, you don't need to know how that works", and when the library invariably fail on some obvious stuff you're left hanging with inscrutable XML files and no decent way to debug the exact layer that fails, with every thread mentioning that issue on the web being met by a variation of "you shouldn't be doing that" or "add this additionnal middleware layer to solve it"

All of that to send two ints and get one back.