Does anybody knows free NN Java lib with a working example of solving a harder task than XOR function?

Personally I took a look at OpenAI lib. But it needs so many another libs, which are not easy to find sometimes. Plus I guess there most of examples was right about XOR. I have my own NN lib: it successfully solves XOR task but falls even in XOR if to make some more neurons or layers.

JOONE. It's easy to find on SourceForge or Google, there are loads more.

Alex