Posted by Itun on Mar 26, 2011; 9:10pm
URL: https://forum.jogamp.org/com-jogamp-opengl-util-Animator-tp2735609p2736840.html

I am sorry for a such tangled post, I was hurry.
I used GLCanvas. I have pasted javax.swing.SwingUtilities.isEventDispatchThread() at the display() function, which had returned "true". But animator must create a new thread for GLEventListener.
Now I am using GLWindow and it return me "false".