As an FYI, I've sent Wendell and co some example code for how to use CPPJVM
to use bitcoinj from native code. A rather rough Hello World app looks like
this:

https://github.com/mikehearn/cppjvm/blob/master/mytest/bcj-hello-world.cpp

So, fairly C++ like.

Further discussion of this should take place on the bitcoinj mailing list.