java.lang.NullPointerException

Coderanch | Sean Gomes | 4 years ago
  1. 0

    NPE when adding combobox selection to my jList

    Coderanch | 4 years ago | Sean Gomes
    java.lang.NullPointerException
  2. 0

    Android: Saving Map State in Google map

    Stack Overflow | 11 months 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 AcHandler.actionPerformed()
    2. Unknown
      AcHandler.actionPerformed
      1. AcHandler.actionPerformed(AcHandler.java:19)
      1 frame
    3. Java RT
      EventDispatchThread.run
      1. javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2028)
      2. javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2351)
      3. javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387)
      4. javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242)
      5. javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:236)
      6. java.awt.Component.processMouseEvent(Component.java:6382)
      7. javax.swing.JComponent.processMouseEvent(JComponent.java:3275)
      8. java.awt.Component.processEvent(Component.java:6147)
      9. java.awt.Container.processEvent(Container.java:2083)
      10. java.awt.Component.dispatchEventImpl(Component.java:4744)
      11. java.awt.Container.dispatchEventImpl(Container.java:2141)
      12. java.awt.Component.dispatchEvent(Component.java:4572)
      13. java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4619)
      14. java.awt.LightweightDispatcher.processMouseEvent(Container.java:4280)
      15. java.awt.LightweightDispatcher.dispatchEvent(Container.java:4210)
      16. java.awt.Container.dispatchEventImpl(Container.java:2127)
      17. java.awt.Window.dispatchEventImpl(Window.java:2489)
      18. java.awt.Component.dispatchEvent(Component.java:4572)
      19. java.awt.EventQueue.dispatchEventImpl(EventQueue.java:710)
      20. java.awt.EventQueue.access$400(EventQueue.java:82)
      21. java.awt.EventQueue$2.run(EventQueue.java:669)
      22. java.awt.EventQueue$2.run(EventQueue.java:667)
      23. java.security.AccessController.doPrivileged(Native Method)
      24. java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87)
      25. java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:98)
      26. java.awt.EventQueue$3.run(EventQueue.java:683)
      27. java.awt.EventQueue$3.run(EventQueue.java:681)
      28. java.security.AccessController.doPrivileged(Native Method)
      29. java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87)
      30. java.awt.EventQueue.dispatchEvent(EventQueue.java:680)
      31. java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:296)
      32. java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:211)
      33. java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:201)
      34. java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:196)
      35. java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:188)
      36. java.awt.EventDispatchThread.run(EventDispatchThread.java:122)
      36 frames