Cubes are not displaying correctly and balls dont keep bouncing

I am going through the material which is why I am posting stuff. Where do you think I am getting all the jmonkey language from?

As far as the setRestitution, I saw that as far as bouncing too, but I also thought using RigidBodyControl could be used for dynamic objects such as a ball. It used an example of a bouncing ball and the code I have, not the one above, bounces off the wall.

As far as the material, I saw on one of the tutorials, it used a brick wall and everytime the ball hit the wall it broke so I originally assumed if you use different material, you can get different results depending on what you tell it to do…

Also, just because you go through the tutorials doesn’t mean you are just gonna know everything and not have any questions, or make any mistakes. I have to interpret what someone else means and that leaves for multiple perspectives which is why I am posting to this forum so that it is clear and I understand it the correct way…

But thank you for taking the time to explain…