java.lang.NullPointerException: This exception has no message.

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via Oracle Community by Raj Jamadagni, 1 year ago
java.lang.NullPointerException:
at com.oracle.jdeveloper.nbwindowsystem.NbEditorContainer.componentShowing(NbEditorContainer.java:467)
at org.openide.windows.WindowManager.componentShowing(WindowManager.java:339)
at org.netbeans.core.windows.WindowManagerImpl.componentShowing(WindowManagerImpl.java:1191)
at org.netbeans.core.windows.view.DefaultView.changeGUI(DefaultView.java:168)
at org.netbeans.core.windows.ViewRequestor.dispatchRequest(ViewRequestor.java:275)
at org.netbeans.core.windows.ViewRequestor.processVisibilityRequest(ViewRequestor.java:264)
at org.netbeans.core.windows.ViewRequestor.postVisibilityRequest(ViewRequestor.java:201)
at org.netbeans.core.windows.ViewRequestor.scheduleRequest(ViewRequestor.java:121)
at org.netbeans.core.windows.Central.setVisible(Central.java:140)
at org.netbeans.core.windows.WindowManagerImpl.setVisible(WindowManagerImpl.java:926)
at org.netbeans.core.windows.WindowSystemImpl.show(WindowSystemImpl.java:105)
at org.netbeans.core.GuiRunLevel$InitWinSys.run(GuiRunLevel.java:246)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:251)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:733)
at java.awt.EventQueue.access$200(EventQueue.java:103)
at java.awt.EventQueue$3.run(EventQueue.java:694)
at java.awt.EventQueue$3.run(EventQueue.java:692)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:703)
at oracle.javatools.internal.ui.EventQueueWrapper._dispatchEvent(EventQueueWrapper.java:169)
at oracle.javatools.internal.ui.EventQueueWrapper.dispatchEvent(EventQueueWrapper.java:151)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)

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