I am new, please help

Hello,
I have been trying to find information ( demos/tutorials ) of Jogl using GL 3 or higher.
Every time I find a demo, like that of the jogl demos page, it is either in Java and using GL 2,
or C++.

If anyone could point me in a direction of a good learning source for using jogl with GL 3 and up,
it would be greatly appreciated!
-Michael Mitchell

Hi

Look at the official Wikipedia page of JOGL, I added a link to an interesting short example (written by Xerxes) using the programmable pipeline.

What I am trying to figure out what the differences are between gl2 and gl3 or 4, or are there no differences between this example and using gl3 or 4.

There are many changes between OpenGL2 and OpenGL3. But it depends a lot on what you want to do and what features you want to use how much that makes a difference.
Here is a summary of the history. http://www.opengl.org/wiki/History_of_OpenGL

It's explained here too:
http://jogamp.org/jogl/doc/Overview-OpenGL-Evolution-And-JOGL.html