java.lang.NullPointerException

Coderanch | Jon Camilleri | 8 years ago
tip
Your exception is missing from the Samebug knowledge base.
Here are the best solutions we found on the Internet.
Click on the to mark the helpful solution and get rewards for you help.
  1. 0

    [newbie] Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException

    Coderanch | 8 years ago | Jon Camilleri
    java.lang.NullPointerException

    Root Cause Analysis

    1. java.lang.NullPointerException

      No message provided

      at homenetwork.bkr.training.ColorAction.actionPerformed()
    2. homenetwork.bkr.training
      ColorAction.actionPerformed
      1. homenetwork.bkr.training.ColorAction.actionPerformed(ColorAction.java:30)
      1 frame
    3. Java RT
      EventDispatchThread.run
      1. javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
      2. javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source)
      3. javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source)
      4. javax.swing.DefaultButtonModel.setPressed(Unknown Source)
      5. javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown Source)
      6. java.awt.Component.processMouseEvent(Unknown Source)
      7. javax.swing.JComponent.processMouseEvent(Unknown Source)
      8. java.awt.Component.processEvent(Unknown Source)
      9. java.awt.Container.processEvent(Unknown Source)
      10. java.awt.Component.dispatchEventImpl(Unknown Source)
      11. java.awt.Container.dispatchEventImpl(Unknown Source)
      12. java.awt.Component.dispatchEvent(Unknown Source)
      13. java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
      14. java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
      15. java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
      16. java.awt.Container.dispatchEventImpl(Unknown Source)
      17. java.awt.Window.dispatchEventImpl(Unknown Source)
      18. java.awt.Component.dispatchEvent(Unknown Source)
      19. java.awt.EventQueue.dispatchEvent(Unknown Source)
      20. java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
      21. java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
      22. java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
      23. java.awt.EventDispatchThread.pumpEvents(Unknown Source)
      24. java.awt.EventDispatchThread.pumpEvents(Unknown Source)
      25. java.awt.EventDispatchThread.run(Unknown Source)
      25 frames