java.lang.NullPointerException

GitHub | chen-regen | 8 months ago
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  1. 0

    GitHub comment 269#236888337

    GitHub | 8 months ago | chen-regen
    java.lang.NullPointerException
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  3. 0

    Getting a nullpointer exception when switching displayables in J2ME

    Stack Overflow | 6 years ago | Pallinder
    java.lang.NullPointerException: 0 at javax.microedition.lcdui.Display$ChameleonTunnel.callScreenListener(), bci=46 at com.sun.midp.chameleon.layers.SoftButtonLayer.processCommand(), bci=74 at com.sun.midp.chameleon.layers.SoftButtonLayer.soft1(), bci=37 at com.sun.midp.chameleon.layers.SoftButtonLayer.keyInput(), bci=36 at com.sun.midp.chameleon.CWindow.keyInput(), bci=38 at javax.microedition.lcdui.Display$DisplayEventConsumerImpl.handleKeyEvent(), bci=17 at com.sun.midp.lcdui.DisplayEventListener.process(), bci=277 at com.sun.midp.events.EventQueue.run(), bci=179
  4. 0

    J2ME (Java) - Null Pointer Exception caught in Display Class

    Stack Overflow | 6 years ago | Tom
    java.lang.NullPointerException: 0 at javax.microedition.lcdui.Display$ChameleonTunnel.callScreenListener(), bci=46 at com.sun.midp.chameleon.layers.SoftButtonLayer.processCommand(), bci=74 at com.sun.midp.chameleon.layers.SoftButtonLayer.soft1(), bci=37 at com.sun.midp.chameleon.layers.SoftButtonLayer.keyInput(), bci=36 at com.sun.midp.chameleon.CWindow.keyInput(), bci=38 at javax.microedition.lcdui.Display$DisplayEventConsumerImpl.handleKeyEvent(), bci=17 at com.sun.midp.lcdui.DisplayEventListener.process(), bci=277 at com.sun.midp.events.EventQueue.run(), bci=179

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    Root Cause Analysis

    1. java.lang.NullPointerException

      No message provided

      at edu.isi.karma.view.VWorksheet.addHeaderViewPath()
    2. edu.isi.karma
      RequestController.doPost
      1. edu.isi.karma.view.VWorksheet.addHeaderViewPath(VWorksheet.java:383)
      2. edu.isi.karma.view.VWorksheet.updateHeaderViewNodes(VWorksheet.java:364)
      3. edu.isi.karma.view.ViewFactory.updateWorksheet(ViewFactory.java:93)
      4. edu.isi.karma.controller.update.RegenerateWorksheetUpdate.applyUpdate(RegenerateWorksheetUpdate.java:61)
      5. edu.isi.karma.controller.update.UpdateContainer.applyUpdates(UpdateContainer.java:100)
      6. edu.isi.karma.webserver.RequestController.doPost(RequestController.java:103)
      6 frames
    3. JavaServlet
      HttpServlet.service
      1. javax.servlet.http.HttpServlet.service(HttpServlet.java:755)
      2. javax.servlet.http.HttpServlet.service(HttpServlet.java:848)
      2 frames
    4. Jetty
      QueuedThreadPool$3.run
      1. org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:698)
      2. org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:505)
      3. org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:138)
      4. org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:564)
      5. org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:213)
      6. org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1096)
      7. org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:432)
      8. org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:175)
      9. org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1030)
      10. org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:136)
      11. org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:201)
      12. org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:109)
      13. org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97)
      14. org.eclipse.jetty.server.Server.handle(Server.java:445)
      15. org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:268)
      16. org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:229)
      17. org.eclipse.jetty.io.AbstractConnection$ReadCallback.run(AbstractConnection.java:358)
      18. org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:601)
      19. org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:532)
      19 frames
    5. Java RT
      Thread.run
      1. java.lang.Thread.run(Thread.java:745)
      1 frame