java.util.NoSuchElementException
   at java.util.LinkedList.getFirst(LinkedList.java:244)
   at java.awt.DefaultKeyboardFocusManager.repostIfFollowsKeyEvents(DefaultKeyboardFocusManager.java:290)
   at java.awt.DefaultKeyboardFocusManager.dispatchEvent(DefaultKeyboardFocusManager.java:325)
   at java.awt.Component.dispatchEventImpl(Component.java:4749)
   at java.awt.Container.dispatchEventImpl(Container.java:2287)
   at java.awt.Window.dispatchEventImpl(Window.java:2724)
   at java.awt.Component.dispatchEvent(Component.java:4700)
   at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:743)
   at java.awt.EventQueue.access$400(EventQueue.java:97)
   at java.awt.EventQueue$3.run(EventQueue.java:694)
   at java.awt.EventQueue$3.run(EventQueue.java:691)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:75)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:86)
   at java.awt.EventQueue$4.run(EventQueue.java:716)
   at java.awt.EventQueue$4.run(EventQueue.java:714)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:75)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:713)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:159)
   at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:220)
   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)