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    Root Cause Analysis

    1. java.lang.NullPointerException

      No message provided

      at javax.swing.plaf.basic.BasicComboBoxUI.setPopupVisible()
    2. Java RT
      Component.setVisible
      1. javax.swing.plaf.basic.BasicComboBoxUI.setPopupVisible(BasicComboBoxUI.java:933)
      2. javax.swing.JComboBox.setPopupVisible(JComboBox.java:789)
      3. javax.swing.JComboBox.hidePopup(JComboBox.java:782)
      4. javax.swing.JComboBox$1.ancestorAdded(JComboBox.java:217)
      5. javax.swing.AncestorNotifier.fireAncestorAdded(AncestorNotifier.java:68)
      6. javax.swing.AncestorNotifier.propertyChange(AncestorNotifier.java:202)
      7. javax.swing.event.SwingPropertyChangeSupport.firePropertyChange(SwingPropertyChangeSupport.java:264)
      8. javax.swing.event.SwingPropertyChangeSupport.firePropertyChange(SwingPropertyChangeSupport.java:232)
      9. javax.swing.JComponent.firePropertyChange(JComponent.java:3801)
      10. javax.swing.JComponent.addNotify(JComponent.java:4271)
      11. java.awt.Container.addNotify(Container.java:1859)
      12. javax.swing.JComponent.addNotify(JComponent.java:4270)
      13. java.awt.Container.addNotify(Container.java:1859)
      14. javax.swing.JComponent.addNotify(JComponent.java:4270)
      15. java.awt.Container.addNotify(Container.java:1859)
      16. javax.swing.JComponent.addNotify(JComponent.java:4270)
      17. java.awt.Container.addNotify(Container.java:1859)
      18. javax.swing.JComponent.addNotify(JComponent.java:4270)
      19. java.awt.Container.addNotify(Container.java:1859)
      20. javax.swing.JComponent.addNotify(JComponent.java:4270)
      21. java.awt.Container.addNotify(Container.java:1859)
      22. javax.swing.JComponent.addNotify(JComponent.java:4270)
      23. java.awt.Container.addNotify(Container.java:1859)
      24. javax.swing.JComponent.addNotify(JComponent.java:4270)
      25. java.awt.Container.addNotify(Container.java:1859)
      26. javax.swing.JComponent.addNotify(JComponent.java:4270)
      27. java.awt.Container.addNotify(Container.java:1859)
      28. javax.swing.JComponent.addNotify(JComponent.java:4270)
      29. javax.swing.JRootPane.addNotify(JRootPane.java:658)
      30. java.awt.Container.addNotify(Container.java:1859)
      31. java.awt.Window.addNotify(Window.java:395)
      32. java.awt.Frame.addNotify(Frame.java:479)
      33. java.awt.Window.show(Window.java:433)
      34. java.awt.Component.show(Component.java:1128)
      35. java.awt.Component.setVisible(Component.java:1083)
      35 frames
    3. com.opone.jdm
      JobDatabaseManager.<init>
      1. com.opone.jdm.JobDatabaseManager.<init>(JobDatabaseManager.java:120)
      1 frame