java has a large built in set of features, whereas in C++ there isn't a lot of hand holding. for anything that needs to get done, you are going to need to use a library or OS api, such as directx or OpenGL for 3d graphics. in java, things like that are built in.
however, C++ is a very good language for you to break the ice with, as i believe requires a little more effort on the programmers end.
The whole secret of existence is to have no fear. Never fear what will become of you, depend on no one. Only the moment you reject all help are you freed.