At some point you will need to learn things like 3D math, texture mapping, what a mesh is, etc. If you can't handle learning new concepts, you are in the wrong line of work...
What you seem to be looking for is a platform that allows you to create 3D games without much programming. I'd suggest something like Unity
or another game-making engine.
Alternatively, you could try JMonkeyEngine which looks fairly similar to the code you posted. Of course, when it comes to lighting, collision, AI, etc. you are on your own.