java.lang.NullPointerException

Stack Overflow | user2983808 | 3 months ago
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    samebug tip
    If you're using an agent, it might not have access privileges over this file, consider not using one or changing it. If you're using one, try to use an agent that might have this privilege.
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    Trying to run JDesktopPane

    Coderanch | 8 years ago | Joonas Järvinen
    java.lang.NullPointerException
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    new to java: how to replace an image extending a JComponent?

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    java.lang.NullPointerException
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    NoClassDefFoundError: javax/swing/GroupLayout$Group on Mac Computer

    Stack Overflow | 7 years ago | baseballtank13
    java.lang.NoClassDefFoundError: javax/swing/GroupLayout$Group

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    Root Cause Analysis

    1. java.lang.NullPointerException

      No message provided

      at EditStdReg.actionPerformed()
    2. Unknown
      EditStdReg.actionPerformed
      1. EditStdReg.actionPerformed(EditStdReg.java:197)
      1 frame
    3. Java RT
      EventDispatchThread.run
      1. javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2022)
      2. javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2348)
      3. javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)
      4. javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)
      5. javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:252)
      6. java.awt.Component.processMouseEvent(Component.java:6535)
      7. javax.swing.JComponent.processMouseEvent(JComponent.java:3324)
      8. java.awt.Component.processEvent(Component.java:6300)
      9. java.awt.Container.processEvent(Container.java:2236)
      10. java.awt.Component.dispatchEventImpl(Component.java:4891)
      11. java.awt.Container.dispatchEventImpl(Container.java:2294)
      12. java.awt.Component.dispatchEvent(Component.java:4713)
      13. java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4888)
      14. java.awt.LightweightDispatcher.processMouseEvent(Container.java:4525)
      15. java.awt.LightweightDispatcher.dispatchEvent(Container.java:4466)
      16. java.awt.Container.dispatchEventImpl(Container.java:2280)
      17. java.awt.Window.dispatchEventImpl(Window.java:2750)
      18. java.awt.Component.dispatchEvent(Component.java:4713)
      19. java.awt.EventQueue.dispatchEventImpl(EventQueue.java:758)
      20. java.awt.EventQueue.access$500(EventQueue.java:97)
      21. java.awt.EventQueue$3.run(EventQueue.java:709)
      22. java.awt.EventQueue$3.run(EventQueue.java:703)
      23. java.security.AccessController.doPrivileged(Native Method)
      24. java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:76)
      25. java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:86)
      26. java.awt.EventQueue$4.run(EventQueue.java:731)
      27. java.awt.EventQueue$4.run(EventQueue.java:729)
      28. java.security.AccessController.doPrivileged(Native Method)
      29. java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:76)
      30. java.awt.EventQueue.dispatchEvent(EventQueue.java:728)
      31. java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
      32. java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
      33. java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
      34. java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
      35. java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
      36. java.awt.EventDispatchThread.run(EventDispatchThread.java:82)
      36 frames