java.lang.NullPointerException

Oracle Community | 807596 | 1 decade ago
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    java.lang.NullPointerException
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    java.lang.NullPointerException
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    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:2049)
      2. javax.swing.JComponent.addNotify(JComponent.java:4291)
      3. java.awt.Container.addNotify(Container.java:2049)
      4. javax.swing.JComponent.addNotify(JComponent.java:4291)
      5. java.awt.Container.addNotify(Container.java:2049)
      6. javax.swing.JComponent.addNotify(JComponent.java:4291)
      7. javax.swing.JRootPane.addNotify(JRootPane.java:676)
      8. java.awt.Container.addNotify(Container.java:2049)
      9. java.awt.Window.addNotify(Window.java:418)
      10. java.awt.Dialog.addNotify(Dialog.java:389)
      11. java.awt.Dialog.conditionalShow(Dialog.java:454)
      12. java.awt.Dialog.show(Dialog.java:524)
      13. java.awt.Component.show(Component.java:1133)
      14. java.awt.Component.setVisible(Component.java:1088)
      14 frames
    3. workbench
      MainWindow.actionPerformed
      1. workbench.MainWindow.actionPerformed(MainWindow.java:188)
      1 frame