Java3D+Javafx doesn't work on Java 14

Simply use the very latest release candidate of JOGL 2.4.0 which is NOT available on Maven Central yet.

I've just updated my tutorial with the necessary options for Netbeans and Eclipse:
https://gouessej.wordpress.com/2012/08/01/java-3d-est-de-retour-java-3d-is-back/

I'll update the tutorial about OpenJFX/JavaFX soon too. I hope that it will help to eliminate some confusion.

Not sure if it will help, but it recalled me this recent commit made in JOGL 2.4.0 on a similar "0 > gcIdx" test.
As array indices are always >= 0 in Java, it's sure that this test can only lead to an IndexOutOfBoundsException exception, no?

The fix is correct, it means that the identifier must be in [0, Integer.MAX_VALUE] whereas the previous test accepted only strictly negative values, which was systematically leading to an ArrayIndexOutOfBoundsException.