java.lang.NullPointerException

Oracle Community | 807546 | 1 decade ago
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    Oracle Community | 1 decade ago | 807546
    java.lang.NullPointerException
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    java.lang.NullPointerException
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    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
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    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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    Cloud Foundry v2 in Grails

    Stack Overflow | 3 years ago | angelo087
    java.lang.NullPointerException: Cannot invoke method getAt() on null object

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    Root Cause Analysis

    1. java.lang.NullPointerException

      No message provided

      at org.apache.jsp.add_jsp._jspService()
    2. org.apache.jsp
      add_jsp._jspService
      1. org.apache.jsp.add_jsp._jspService(add_jsp.java:220)
      1 frame
    3. GWT dev
      HttpJspBase.service
      1. org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:137)
      1 frame
    4. JavaServlet
      HttpServlet.service
      1. javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
      1 frame
    5. GWT dev
      JspServlet.service
      1. org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:204)
      2. org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:295)
      3. org.apache.jasper.servlet.JspServlet.service(JspServlet.java:241)
      3 frames
    6. JavaServlet
      HttpServlet.service
      1. javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
      1 frame
    7. Glassfish Core
      ContainerBase.invoke
      1. org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:247)
      2. org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
      3. org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:260)
      4. org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
      5. org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
      6. org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
      7. org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
      8. org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
      9. org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
      10. org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
      11. org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2415)
      12. org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180)
      13. org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
      14. org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:170)
      15. org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)
      16. org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:172)
      17. org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)
      18. org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
      19. org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
      20. org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:174)
      21. org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
      22. org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
      23. org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
      23 frames
    8. org.apache.coyote
      CoyoteAdapter.service
      1. org.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java:223)
      1 frame
    9. Grizzly HTTP
      TcpWorkerThread.runIt
      1. org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:432)
      2. org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:386)
      3. org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:534)
      3 frames
    10. Tomcat Util
      ThreadPool$ControlRunnable.run
      1. org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:530)
      1 frame
    11. Java RT
      Thread.run
      1. java.lang.Thread.run(Thread.java:536)
      1 frame