java.lang.NullPointerException

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    Root Cause Analysis

    1. java.lang.NullPointerException

      No message provided

      at java.awt.Container.addNotify()
    2. Java RT
      Component.setVisible
      1. java.awt.Container.addNotify(Container.java:2045)
      2. javax.swing.JComponent.addNotify(JComponent.java:4283)
      3. java.awt.Container.addNotify(Container.java:2045)
      4. javax.swing.JComponent.addNotify(JComponent.java:4283)
      5. java.awt.Container.addNotify(Container.java:2045)
      6. javax.swing.JComponent.addNotify(JComponent.java:4283)
      7. java.awt.Container.addNotify(Container.java:2045)
      8. javax.swing.JComponent.addNotify(JComponent.java:4283)
      9. java.awt.Container.addNotify(Container.java:2045)
      10. javax.swing.JComponent.addNotify(JComponent.java:4283)
      11. java.awt.Container.addNotify(Container.java:2045)
      12. javax.swing.JComponent.addNotify(JComponent.java:4283)
      13. java.awt.Container.addNotify(Container.java:2045)
      14. javax.swing.JComponent.addNotify(JComponent.java:4283)
      15. java.awt.Container.addNotify(Container.java:2045)
      16. javax.swing.JComponent.addNotify(JComponent.java:4283)
      17. java.awt.Container.addNotify(Container.java:2045)
      18. javax.swing.JComponent.addNotify(JComponent.java:4283)
      19. javax.swing.JRootPane.addNotify(JRootPane.java:673)
      20. java.awt.Container.addNotify(Container.java:2045)
      21. java.awt.Window.addNotify(Window.java:410)
      22. java.awt.Frame.addNotify(Frame.java:479)
      23. java.awt.Window.show(Window.java:448)
      24. java.awt.Component.show(Component.java:1134)
      25. java.awt.Component.setVisible(Component.java:1089)
      25 frames