Sorry for the confusion. Actually, you need to build JogAmp from its source code to run its examples. You can use it as a library but I shouldn't have mixed both. The problem is that the latter is supported with IDEA IntelliJ but not the former (there is no instruction to build JogAmp with your IDE). If you still want to do that, download GlueGen, JOGL, JOAL and JOGL-demos from Github but as I don't use this IDE, I won't be able to help you. If you used Eclipse , you would just have to import those projects with EGit within this IDE and it would automatically build everything for you with no modification.
There is another solution. As you are interested in using only 2 examples, you can create a new project and add JogAmp as a library dependency by following these instructions
. Then, copy the source code of the examples you'd like to use and a few required classes in order not to depend on tons of other libraries used in jogl-demos (JBullet, vecmath, ...). Before trying to run complicated examples, you can try to run the rudimentary example I posted on the official Wikipedia page of JOGL
In my humble opinion, it's important to start with something simple.
P.S : I'm sorry for IDEA IntelliJ users, I don't want to harm anybody but as far as I know, no JogAmp contributor uses it as its main IDE. Please feel free to contribute by improving our instructions for this IDE. In the meantime, rather use Eclipse or Netbeans.