Hi, Kari Yachan, cocos2d-x only use c*+ & lua language. There’s no “cocos2d-x java” project existing currently.
The homepage of cocos2d-android is http://code.google.com/p/cocos2d-android/, you can commit issues there.
If you don’t dislike coding in c*+ on NDK, you can try cocos2d-x. I think it’s more stable & proved by more commercial games than cocos2d-android.