840 2013-09-22 02:32:57 +0200 IllegalThreadStateException at DefaultEDTUtil.restart() when re-launch NEWT Applet (JOGLNewtApplet1Run) 2013-09-22 02:36:10 +0200 1 1 3 JogAmp Newt core 1 All all RESOLVED FIXED --- enhancement --- 0 sgothel sgothel --- c5bec6b8f5c33a812338dcbe8994546bddf0508b --- oldest_to_newest 2984 0 sgothel 2013-09-22 02:32:57 +0200 With jdk7u40, when re-launching a NEWT applet (JOGLNewtApplet1Run), i.e. via browser back and forth, the following exception happens: java.lang.RuntimeException: java.lang.IllegalThreadStateException at com.jogamp.newt.awt.applet.JOGLNewtApplet1Run.init(JOGLNewtApplet1Run.java:218) at com.sun.deploy.uitoolkit.impl.awt.AWTAppletAdapter.init(Unknown Source) at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source) at java.lang.Thread.run(Unknown Source) Caused by: java.lang.IllegalThreadStateException at java.lang.ThreadGroup.addUnstarted(Unknown Source) at java.lang.Thread.init(Unknown Source) at java.lang.Thread.<init>(Unknown Source) at jogamp.newt.DefaultEDTUtil$NEDT.<init>(DefaultEDTUtil.java:280) at jogamp.newt.DefaultEDTUtil.restart(DefaultEDTUtil.java:91) at jogamp.newt.DisplayImpl.runOnEDTIfAvail(DisplayImpl.java:231) at jogamp.newt.WindowImpl.runOnEDTIfAvail(WindowImpl.java:1758) at jogamp.newt.WindowImpl.setUndecorated(WindowImpl.java:1477) at com.jogamp.newt.opengl.GLWindow.setUndecorated(GLWindow.java:278) at com.jogamp.newt.awt.applet.JOGLNewtApplet1Run.init(JOGLNewtApplet1Run.java:188) ... 3 more This is due to 7u40's changed ThreadGroup (tg) lifecycle, i.e. the tg is destroyed. In such case, DefaultEDTUtil.restart() shall use the current threads tg.