java.lang.NullPointerException

Oracle Community | 807555 | 1 decade ago
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    Oracle Community | 1 decade ago | 807555
    java.lang.NullPointerException
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    Oracle Community | 1 decade ago | 807551
    java.lang.NullPointerException
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    Java swing simple address book event error

    Stack Overflow | 2 years ago | user3043051
    java.lang.NullPointerException
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    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 AddressBook.actionPerformed()
    2. Unknown
      AddressBook.actionPerformed
      1. AddressBook.actionPerformed(AddressBook.java:236)
      1 frame
    3. Java RT
      EventDispatchThread.run
      1. javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1450)
      2. javax.swing.AbstractButton$ForwardActionEvents.actionPerformed(AbstractButton.java:1504)
      3. javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:378)
      4. javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:250)
      5. javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:216)
      6. java.awt.Component.processMouseEvent(Component.java:3715)
      7. java.awt.Component.processEvent(Component.java:3544)
      8. java.awt.Container.processEvent(Container.java:1164)
      9. java.awt.Component.dispatchEventImpl(Component.java:2593)
      10. java.awt.Container.dispatchEventImpl(Container.java:1213)
      11. java.awt.Component.dispatchEvent(Component.java:2497)
      12. java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:2451)
      13. java.awt.LightweightDispatcher.processMouseEvent(Container.java:2216)
      14. java.awt.LightweightDispatcher.dispatchEvent(Container.java:2125)
      15. java.awt.Container.dispatchEventImpl(Container.java:1200)
      16. java.awt.Window.dispatchEventImpl(Window.java:914)
      17. java.awt.Component.dispatchEvent(Component.java:2497)
      18. java.awt.EventQueue.dispatchEvent(EventQueue.java:339)
      19. java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:131)
      20. java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:98)
      21. java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
      22. java.awt.EventDispatchThread.run(EventDispatchThread.java:85)
      22 frames