java.lang.NullPointerException

Oracle Community | 807587 | 1 decade ago
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  1. 0

    Jcheckbox in JTable

    Oracle Community | 1 decade ago | 807587
    java.lang.NullPointerException

    Root Cause Analysis

    1. java.lang.NullPointerException

      No message provided

      at StudentDataTable.getColumnClass()
    2. Unknown
      StudentDataTable.getColumnClass
      1. StudentDataTable.getColumnClass(StudentDataTable.java:51)
      1 frame
    3. Java RT
      EventDispatchThread.run
      1. javax.swing.JTable.getColumnClass(JTable.java:1752)
      2. javax.swing.JTable.getCellRenderer(JTable.java:3700)
      3. javax.swing.plaf.basic.BasicTableUI.paintCell(BasicTableUI.java:1148)
      4. javax.swing.plaf.basic.BasicTableUI.paintCells(BasicTableUI.java:1051)
      5. javax.swing.plaf.basic.BasicTableUI.paint(BasicTableUI.java:974)
      6. javax.swing.plaf.ComponentUI.update(ComponentUI.java:142)
      7. javax.swing.JComponent.paintComponent(JComponent.java:541)
      8. javax.swing.JComponent.paint(JComponent.java:808)
      9. javax.swing.JComponent.paintChildren(JComponent.java:647)
      10. javax.swing.JComponent.paint(JComponent.java:817)
      11. javax.swing.JViewport.paint(JViewport.java:722)
      12. javax.swing.JComponent.paintChildren(JComponent.java:647)
      13. javax.swing.JComponent.paint(JComponent.java:817)
      14. javax.swing.JComponent.paintChildren(JComponent.java:647)
      15. javax.swing.JComponent.paint(JComponent.java:817)
      16. javax.swing.JComponent.paintChildren(JComponent.java:647)
      17. javax.swing.JComponent.paint(JComponent.java:817)
      18. javax.swing.JComponent.paintChildren(JComponent.java:647)
      19. javax.swing.JComponent.paint(JComponent.java:817)
      20. javax.swing.JComponent.paintWithOffscreenBuffer(JComponent.java:4787)
      21. javax.swing.JComponent.paintDoubleBuffered(JComponent.java:4740)
      22. javax.swing.JComponent._paintImmediately(JComponent.java:4685)
      23. javax.swing.JComponent.paintImmediately(JComponent.java:4488)
      24. javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:410)
      25. javax.swing.SystemEventQueueUtilities$ComponentWorkRequest.run(SystemEventQueueUtilities.java:117)
      26. java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:178)
      27. java.awt.EventQueue.dispatchEvent(EventQueue.java:454)
      28. java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:201)
      29. java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:151)
      30. java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:145)
      31. java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:137)
      32. java.awt.EventDispatchThread.run(EventDispatchThread.java:100)
      32 frames