java.lang.NullPointerException

Coderanch | mitchell bat | 10 months ago
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    Java programming running but not connecting to the MySQL database

    Stack Overflow | 10 months ago | mitchyb
    java.lang.NullPointerException
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    JDBC connection problem

    Coderanch | 10 months ago | mitchell bat
    java.lang.NullPointerException

    Root Cause Analysis

    1. java.lang.NullPointerException

      No message provided

      at app.Login.jButton1MouseClicked()
    2. app
      Login$3.mouseClicked
      1. app.Login.jButton1MouseClicked(Login.java:194)
      2. app.Login.access$200(Login.java:13)
      3. app.Login$3.mouseClicked(Login.java:113)
      3 frames
    3. Java RT
      EventDispatchThread.run
      1. java.awt.AWTEventMulticaster.mouseClicked(AWTEventMulticaster.java:270)
      2. java.awt.Component.processMouseEvent(Component.java:6528)
      3. javax.swing.JComponent.processMouseEvent(JComponent.java:3321)
      4. java.awt.Component.processEvent(Component.java:6290)
      5. java.awt.Container.processEvent(Container.java:2234)
      6. java.awt.Component.dispatchEventImpl(Component.java:4881)
      7. java.awt.Container.dispatchEventImpl(Container.java:2292)
      8. java.awt.Component.dispatchEvent(Component.java:4703)
      9. java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4898)
      10. java.awt.LightweightDispatcher.processMouseEvent(Container.java:4542)
      11. java.awt.LightweightDispatcher.dispatchEvent(Container.java:4462)
      12. java.awt.Container.dispatchEventImpl(Container.java:2278)
      13. java.awt.Window.dispatchEventImpl(Window.java:2739)
      14. java.awt.Component.dispatchEvent(Component.java:4703)
      15. java.awt.EventQueue.dispatchEventImpl(EventQueue.java:746)
      16. java.awt.EventQueue.access$400(EventQueue.java:97)
      17. java.awt.EventQueue$3.run(EventQueue.java:697)
      18. java.awt.EventQueue$3.run(EventQueue.java:691)
      19. java.security.AccessController.doPrivileged(Native Method)
      20. java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:75)
      21. java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:86)
      22. java.awt.EventQueue$4.run(EventQueue.java:719)
      23. java.awt.EventQueue$4.run(EventQueue.java:717)
      24. java.security.AccessController.doPrivileged(Native Method)
      25. java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:75)
      26. java.awt.EventQueue.dispatchEvent(EventQueue.java:716)
      27. java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
      28. java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
      29. java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
      30. java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
      31. java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
      32. java.awt.EventDispatchThread.run(EventDispatchThread.java:82)
      32 frames