java.lang.NullPointerException

Coderanch | Libor Jelinek | 6 years ago
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    How to see true origin of exception?

    Coderanch | 6 years ago | Libor Jelinek
    java.lang.NullPointerException

    Root Cause Analysis

    1. java.lang.NullPointerException

      No message provided

      at org.openide.windows.OpenComponentAction.actionPerformed()
    2. org.openide.windows
      OpenComponentAction.actionPerformed
      1. org.openide.windows.OpenComponentAction.actionPerformed(OpenComponentAction.java:89)
      1 frame
    3. org.openide.awt
      AlwaysEnabledAction$1.run
      1. org.openide.awt.AlwaysEnabledAction$1.run(AlwaysEnabledAction.java:137)
      1 frame
    4. org.openide.util
      ActionInvoker.invokeAction
      1. org.openide.util.actions.ActionInvoker$1.run(ActionInvoker.java:95)
      2. org.openide.util.actions.ActionInvoker.doPerformAction(ActionInvoker.java:116)
      3. org.openide.util.actions.ActionInvoker.invokeAction(ActionInvoker.java:99)
      3 frames
    5. org.openide.awt
      AlwaysEnabledAction.actionPerformed
      1. org.openide.awt.AlwaysEnabledAction.actionPerformed(AlwaysEnabledAction.java:140)
      1 frame
    6. Java RT
      EventQueue.dispatchEvent
      1. javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2018)
      2. javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2341)
      3. javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)
      4. javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)
      5. javax.swing.AbstractButton.doClick(AbstractButton.java:376)
      6. javax.swing.plaf.basic.BasicMenuItemUI.doClick(BasicMenuItemUI.java:833)
      7. javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(BasicMenuItemUI.java:877)
      8. java.awt.Component.processMouseEvent(Component.java:6437)
      9. javax.swing.JComponent.processMouseEvent(JComponent.java:3321)
      10. java.awt.Component.processEvent(Component.java:6202)
      11. java.awt.Container.processEvent(Container.java:2213)
      12. java.awt.Component.dispatchEventImpl(Component.java:4793)
      13. java.awt.Container.dispatchEventImpl(Container.java:2271)
      14. java.awt.Component.dispatchEvent(Component.java:4619)
      15. java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4816)
      16. java.awt.LightweightDispatcher.processMouseEvent(Container.java:4476)
      17. java.awt.LightweightDispatcher.dispatchEvent(Container.java:4406)
      18. java.awt.Container.dispatchEventImpl(Container.java:2257)
      19. java.awt.Window.dispatchEventImpl(Window.java:2677)
      20. java.awt.Component.dispatchEvent(Component.java:4619)
      21. java.awt.EventQueue.dispatchEvent(EventQueue.java:662)
      21 frames
    7. org.netbeans.core
      TimableEventQueue.dispatchEvent
      1. org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:148)
      1 frame