java.lang.NullPointerException

Oracle Community | 807541 | 1 decade ago
tip
Your exception is missing from the Samebug knowledge base.
Here are the best solutions we found on the Internet.
Click on the to mark the helpful solution and get rewards for you help.
  1. 0

    Comm API work great until JARed up !

    Oracle Community | 1 decade ago | 807541
    java.lang.NullPointerException

    Root Cause Analysis

    1. java.lang.NullPointerException

      No message provided

      at led_max.Commwrite.Commwrite()
    2. led_max
      Frame1$4.actionPerformed
      1. led_max.Commwrite.Commwrite(Commwrite.java:32)
      2. led_max.Frame1.jButton6_actionPerformed(Frame1.java:679)
      3. led_max.Frame1$4.actionPerformed(Frame1.java:173)
      3 frames
    3. Java RT
      EventDispatchThread.run
      1. javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1764)
      2. javax.swing.AbstractButton$ForwardActionEvents.actionPerformed(AbstractButton.java:1817)
      3. javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:419)
      4. javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:257)
      5. javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:245)
      6. java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:227)
      7. java.awt.Component.processMouseEvent(Component.java:5093)
      8. java.awt.Component.processEvent(Component.java:4890)
      9. java.awt.Container.processEvent(Container.java:1566)
      10. java.awt.Component.dispatchEventImpl(Component.java:3598)
      11. java.awt.Container.dispatchEventImpl(Container.java:1623)
      12. java.awt.Component.dispatchEvent(Component.java:3439)
      13. java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:3450)
      14. java.awt.LightweightDispatcher.processMouseEvent(Container.java:3165)
      15. java.awt.LightweightDispatcher.dispatchEvent(Container.java:3095)
      16. java.awt.Container.dispatchEventImpl(Container.java:1609)
      17. java.awt.Window.dispatchEventImpl(Window.java:1585)
      18. java.awt.Component.dispatchEvent(Component.java:3439)
      19. java.awt.EventQueue.dispatchEvent(EventQueue.java:450)
      20. java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:197)
      21. java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
      22. java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:144)
      23. java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:136)
      24. java.awt.EventDispatchThread.run(EventDispatchThread.java:99)
      24 frames