java.lang.NullPointerException

Stack Overflow | user2983808 | 3 months ago
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    Java Exceptions Error

    Stack Overflow | 4 months ago | Ahmed
    java.lang.NullPointerException
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    Trying to run JDesktopPane

    Coderanch | 8 years ago | Joonas Järvinen
    java.lang.NullPointerException
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    EJB3 equivalent of Handle?

    Oracle Community | 1 decade ago | 843830
    java.lang.NoClassDefFoundError: LstockI nformation/Iteamdetails; Exception in thread "AWT-EventQueue-0" java.lang.NoClassDefFoundError: stockInfo rmation/Department at stockinfor2.NewDepartclient$1.actionPerformed(NewDepartclient.java:78 ) at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:19 95) at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.jav a:2318) at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel .java:387) at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242 ) at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonL istener.java:236)

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Root Cause Analysis

  1. java.lang.NullPointerException

    No message provided

    at javax.swing.ImageIcon.<init>()
  2. Java RT
    ImageIcon.<init>
    1. javax.swing.ImageIcon.<init>(ImageIcon.java:217)
    1 frame
  3. Unknown
    Login.actionPerformed
    1. frmAdminMDI.<init>(frmAdminMDI.java:40)
    2. Login.actionPerformed(Login.java:67)
    2 frames
  4. 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