Posted by gouessej on Jul 06, 2012; 2:22pm
URL: https://forum.jogamp.org/Applet-demos-not-working-tp4025445p4025447.html

Hi

As you are under Ubuntu, OpenJDK (with Icedtea and Icedtea-web) is installed by default. "legacy" applets work but applets using JNLP are not yet supported by Icedtea-web. I advise you to use Java Web Start until this feature is implemented.

Anyway, I think that the JOGL applet is not allowed to decompress the JARs containing the native libraries in your temporary directory on your machine, that's why you get this exception trace, you should report this bug.