java.lang.NullPointerException

Stack Overflow | Java Beginner | 4 months ago
  1. 0

    Referencing other class gives me errors

    Stack Overflow | 4 months ago | Java Beginner
    java.lang.NullPointerException
  2. 0
    Assign onCickListener to imageView in ExpandableListView inside getChildView.
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  4. 0
    The Fragment was destroyed, and getActivity() returned null. Don't destroy the Fragment.
  5. 0

    Android: Saving Map State in Google map

    Stack Overflow | 1 year ago | Junie Negentien
    java.lang.RuntimeException: Unable to resume activity {com.ourThesis.junieNegentien2015/com.ourThesis.junieNegentien2015.MainActivity}: java.lang.NullPointerException

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    Root Cause Analysis

    1. java.lang.NullPointerException

      No message provided

      at Panel.paintComponent()
    2. Unknown
      Panel.paintComponent
      1. Panel.paintComponent(Panel.java:71)
      1 frame
    3. Java RT
      EventDispatchThread.run
      1. javax.swing.JComponent.paint(Unknown Source)
      2. javax.swing.JComponent.paintChildren(Unknown Source)
      3. javax.swing.JComponent.paint(Unknown Source)
      4. javax.swing.JComponent.paintChildren(Unknown Source)
      5. javax.swing.JComponent.paint(Unknown Source)
      6. javax.swing.JLayeredPane.paint(Unknown Source)
      7. javax.swing.JComponent.paintChildren(Unknown Source)
      8. javax.swing.JComponent.paintToOffscreen(Unknown Source)
      9. javax.swing.RepaintManager$PaintManager.paintDoubleBuffered(Unknown Source)
      10. javax.swing.RepaintManager$PaintManager.paint(Unknown Source)
      11. javax.swing.RepaintManager.paint(Unknown Source)
      12. javax.swing.JComponent.paint(Unknown Source)
      13. java.awt.GraphicsCallback$PaintCallback.run(Unknown Source)
      14. sun.awt.SunGraphicsCallback.runOneComponent(Unknown Source)
      15. sun.awt.SunGraphicsCallback.runComponents(Unknown Source)
      16. java.awt.Container.paint(Unknown Source)
      17. java.awt.Window.paint(Unknown Source)
      18. javax.swing.RepaintManager$4.run(Unknown Source)
      19. javax.swing.RepaintManager$4.run(Unknown Source)
      20. java.security.AccessController.doPrivileged(Native Method)
      21. java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
      22. javax.swing.RepaintManager.paintDirtyRegions(Unknown Source)
      23. javax.swing.RepaintManager.paintDirtyRegions(Unknown Source)
      24. javax.swing.RepaintManager.prePaintDirtyRegions(Unknown Source)
      25. javax.swing.RepaintManager.access$1200(Unknown Source)
      26. javax.swing.RepaintManager$ProcessingRunnable.run(Unknown Source)
      27. java.awt.event.InvocationEvent.dispatch(Unknown Source)
      28. java.awt.EventQueue.dispatchEventImpl(Unknown Source)
      29. java.awt.EventQueue.access$500(Unknown Source)
      30. java.awt.EventQueue$3.run(Unknown Source)
      31. java.awt.EventQueue$3.run(Unknown Source)
      32. java.security.AccessController.doPrivileged(Native Method)
      33. java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
      34. java.awt.EventQueue.dispatchEvent(Unknown Source)
      35. java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
      36. java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
      37. java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
      38. java.awt.EventDispatchThread.pumpEvents(Unknown Source)
      39. java.awt.EventDispatchThread.pumpEvents(Unknown Source)
      40. java.awt.EventDispatchThread.run(Unknown Source)
      40 frames