java.security.AccessControlException: access denied ("java.lang.RuntimePermission" "modifyThreadGroup")
   at java.security.AccessControlContext.checkPermission(AccessControlContext.java:364)
   at java.security.AccessController.checkPermission(AccessController.java:560)
   at java.lang.SecurityManager.checkPermission(SecurityManager.java:549)
   at sun.applet.AppletSecurity.checkAccess(AppletSecurity.java:252)
   at java.lang.ThreadGroup.checkAccess(ThreadGroup.java:315)
   at java.lang.Thread.init(Thread.java:376)
   at java.lang.Thread.<init>(Thread.java:525)
   at org.netbeans.modules.debugger.jpda.visual.remote.RemoteAWTService.startAccessLoop(RemoteAWTService.java:86)
   at java.awt.EventQueue.getNextEvent(EventQueue.java:522)
   at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:185)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:135)
   at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:123)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:119)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:111)
   at java.awt.EventDispatchThread.run(EventDispatchThread.java:97)