Posted by Pixelapp on Aug 07, 2012; 2:41am
URL: https://forum.jogamp.org/error-running-Grand-Canyon-Demo-applet-from-jogamp-org-jogl-demos-www-tp4025760p4025761.html

The error is because this demo doesn't seem to be maintained anymore. It even draws resources from http://download.java.net/media/jogl/ which has been long deprecated.

I suggest you use the demos here: http://jogamp.org/deployment/jogamp-current/jogl-demos/ instead. Those demos surely are maintained.

Cheers.