Posted by gouessej on Oct 20, 2014; 9:21am
URL: https://forum.jogamp.org/Getting-Java3d-to-work-on-OS-X-on-IntelliJ-tp4033405p4033411.html

You should remove all these JARs, j3dcore, vecmath, j3dutils, gluegen-rt, jogl, ... You should check whether there are the same JARs in another location.

You mustn't put install any library as an extension, don't put any JARs into the "Extensions" directory, it is a dangerous method. My instructions state that. Just put the JARs elsewhere, neither in the JVM, nor in the extensions directories.

Thank you for your nice feedback, I will improve my tutorial :)

Edit.: Maybe you'll be able to teach something to your teacher then, I find that exciting :) You'll be proud of yourself ;)

Edit.2: Apple Java 1.6 is deprecated:
https://developer.apple.com/library/mac/releasenotes/Java/JavaSnowLeopardUpdate3LeopardUpdate8RN/NewandNoteworthy/NewandNoteworthy.html#//apple_ref/doc/uid/TP40010380-CH4-SW1
Please use Java 1.8 (OpenJDK or Oracle Java).