java.lang.NullPointerException

Coderanch | Peter Hammar | 7 years ago
  1. 0

    Trying to change the text on a button when clicked - crasches....

    Coderanch | 7 years ago | Peter Hammar
    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 bkjakob.welCome.actionPerformed()
    2. bkjakob
      welCome.actionPerformed
      1. bkjakob.welCome.actionPerformed(welCome.java:39)
      1 frame
    3. Java RT
      EventDispatchThread.run
      1. javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1995)
      2. javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2318)
      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:6263)
      7. javax.swing.JComponent.processMouseEvent(JComponent.java:3267)
      8. java.awt.Component.processEvent(Component.java:6028)
      9. java.awt.Container.processEvent(Container.java:2041)
      10. java.awt.Component.dispatchEventImpl(Component.java:4630)
      11. java.awt.Container.dispatchEventImpl(Container.java:2099)
      12. java.awt.Component.dispatchEvent(Component.java:4460)
      13. java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4574)
      14. java.awt.LightweightDispatcher.processMouseEvent(Container.java:4238)
      15. java.awt.LightweightDispatcher.dispatchEvent(Container.java:4168)
      16. java.awt.Container.dispatchEventImpl(Container.java:2085)
      17. java.awt.Window.dispatchEventImpl(Window.java:2475)
      18. java.awt.Component.dispatchEvent(Component.java:4460)
      19. java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
      20. java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
      21. java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
      22. java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
      23. java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
      24. java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
      25. java.awt.EventDispatchThread.run(EventDispatchThread.java:122)
      25 frames