Posted by gouessej on Jun 21, 2019; 1:50pm
URL: https://forum.jogamp.org/Help-Setting-up-JOGL-and-an-error-with-SimpleScene-java-tp4025890p4039857.html

Are you sure that you followed these instructions?
https://jogamp.org/wiki/index.php?title=Setting_up_a_JogAmp_project_in_your_favorite_IDE