java.lang.NullPointerException

Oracle Community | 807596 | 1 decade ago
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    java.lang.NullPointerException--please help

    Oracle Community | 1 decade ago | 807596
    java.lang.NullPointerException

    Root Cause Analysis

    1. java.lang.NullPointerException

      No message provided

      at AllLights.mouseUp()
    2. Unknown
      AllLights$1ButtonListener.actionPerformed
      1. AllLights.mouseUp(AllLights.java:78)
      2. AllLights$1ButtonListener.actionPerformed(AllLights.java:47)
      2 frames
    3. Java RT
      EventDispatchThread.run
      1. javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1849)
      2. javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2167)
      3. javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:420)
      4. javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:258)
      5. javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:234)
      6. java.awt.Component.processMouseEvent(Component.java:5465)
      7. javax.swing.JComponent.processMouseEvent(JComponent.java:3089)
      8. java.awt.Component.processEvent(Component.java:5230)
      9. java.awt.Container.processEvent(Container.java:1961)
      10. java.awt.Component.dispatchEventImpl(Component.java:3933)
      11. java.awt.Container.dispatchEventImpl(Container.java:2019)
      12. java.awt.Component.dispatchEvent(Component.java:3781)
      13. java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4205)
      14. java.awt.LightweightDispatcher.processMouseEvent(Container.java:3885)
      15. java.awt.LightweightDispatcher.dispatchEvent(Container.java:3815)
      16. java.awt.Container.dispatchEventImpl(Container.java:2005)
      17. java.awt.Window.dispatchEventImpl(Window.java:1764)
      18. java.awt.Component.dispatchEvent(Component.java:3781)
      19. java.awt.EventQueue.dispatchEvent(EventQueue.java:463)
      20. java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:234)
      21. java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:163)
      22. java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:157)
      23. java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:149)
      24. java.awt.EventDispatchThread.run(EventDispatchThread.java:110)
      24 frames