java.lang.NullPointerException

Oracle Community | 808915 | 6 years ago
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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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  3. 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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    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 com.thortech.xl.gc.util.TransformationEngine.doTransformation()
    2. com.thortech.xl
      GCAdapterLibrary.executeFunctionality
      1. com.thortech.xl.gc.util.TransformationEngine.doTransformation(Unknown Source)
      2. com.thortech.xl.gc.util.TransformationEngine.transform(Unknown Source)
      3. com.thortech.xl.gc.runtime.GCAdapterLibrary.executeFunctionality(Unknown Source)
      3 frames
    3. Java RT
      Method.invoke
      1. sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      2. sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
      3. sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
      4. java.lang.reflect.Method.invoke(Method.java:597)
      4 frames
    4. com.thortech.xl
      tcFormInstanceOperationsSession.setProcessFormData
      1. com.thortech.xl.adapterGlue.ScheduleItemEvents.adpDBAT_PROVISIONING1_GTC.GENERICADAPTER(adpDBAT_PROVISIONING1_GTC.java:125)
      2. com.thortech.xl.adapterGlue.ScheduleItemEvents.adpDBAT_PROVISIONING1_GTC.implementation(adpDBAT_PROVISIONING1_GTC.java:70)
      3. com.thortech.xl.client.events.tcBaseEvent.run(Unknown Source)
      4. com.thortech.xl.dataobj.tcDataObj.runEvent(Unknown Source)
      5. com.thortech.xl.dataobj.tcScheduleItem.runMilestoneEvent(Unknown Source)
      6. com.thortech.xl.dataobj.tcScheduleItem.eventPostInsert(Unknown Source)
      7. com.thortech.xl.dataobj.tcDataObj.insert(Unknown Source)
      8. com.thortech.xl.dataobj.tcDataObj.save(Unknown Source)
      9. com.thortech.xl.dataobj.tcORC.insertNonConditionalMilestones(Unknown Source)
      10. com.thortech.xl.dataobj.tcORC.completeSystemValidationMilestone(Unknown Source)
      11. com.thortech.xl.dataobj.tcOrderItemInfo.completeCarrierBaseMilestone(Unknown Source)
      12. com.thortech.xl.dataobj.tcOrderItemInfo.eventPostInsert(Unknown Source)
      13. com.thortech.xl.dataobj.tcUDProcess.eventPostInsert(Unknown Source)
      14. com.thortech.xl.dataobj.tcDataObj.insert(Unknown Source)
      15. com.thortech.xl.dataobj.tcDataObj.save(Unknown Source)
      16. com.thortech.xl.dataobj.tcTableDataObj.save(Unknown Source)
      17. com.thortech.xl.ejb.beansimpl.tcFormInstanceOperationsBean.setProcessFormData(Unknown Source)
      18. com.thortech.xl.ejb.beansimpl.tcFormInstanceOperationsBean.setProcessFormData(Unknown Source)
      19. com.thortech.xl.ejb.beans.tcFormInstanceOperationsSession.setProcessFormData(Unknown Source)
      19 frames
    5. Java RT
      Method.invoke
      1. sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      2. sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
      3. sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
      4. java.lang.reflect.Method.invoke(Method.java:597)
      4 frames
    6. JBoss Application Server Server
      StatelessSessionContainer$ContainerInterceptor.invoke
      1. org.jboss.invocation.Invocation.performCall(Invocation.java:359)
      2. org.jboss.ejb.StatelessSessionContainer$ContainerInterceptor.invoke(StatelessSessionContainer.java:237)
      2 frames
    7. JBoss Application Server Connector
      CachedConnectionInterceptor.invoke
      1. org.jboss.resource.connectionmanager.CachedConnectionInterceptor.invoke(CachedConnectionInterceptor.java:158)
      1 frame
    8. JBoss Application Server Server
      Container.invoke
      1. org.jboss.ejb.plugins.StatelessSessionInstanceInterceptor.invoke(StatelessSessionInstanceInterceptor.java:169)
      2. org.jboss.ejb.plugins.CallValidationInterceptor.invoke(CallValidationInterceptor.java:63)
      3. org.jboss.ejb.plugins.AbstractTxInterceptor.invokeNext(AbstractTxInterceptor.java:121)
      4. org.jboss.ejb.plugins.TxInterceptorCMT.runWithTransactions(TxInterceptorCMT.java:350)
      5. org.jboss.ejb.plugins.TxInterceptorCMT.invoke(TxInterceptorCMT.java:181)
      6. org.jboss.ejb.plugins.SecurityInterceptor.invoke(SecurityInterceptor.java:168)
      7. org.jboss.ejb.plugins.LogInterceptor.invoke(LogInterceptor.java:205)
      8. org.jboss.ejb.plugins.ProxyFactoryFinderInterceptor.invoke(ProxyFactoryFinderInterceptor.java:138)
      9. org.jboss.ejb.SessionContainer.internalInvoke(SessionContainer.java:648)
      10. org.jboss.ejb.Container.invoke(Container.java:960)
      10 frames
    9. Java RT
      Method.invoke
      1. sun.reflect.GeneratedMethodAccessor128.invoke(Unknown Source)
      2. sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
      3. java.lang.reflect.Method.invoke(Method.java:597)
      3 frames
    10. org.jboss.mx
      ReflectedDispatcher.invoke
      1. org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
      1 frame
    11. JBoss Application Server J2SE
      MBeanServerImpl.invoke
      1. org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
      2. org.jboss.mx.server.Invocation.invoke(Invocation.java:86)
      3. org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
      4. org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
      4 frames
    12. JBoss Application Server Server
      ClientContainer.invoke
      1. org.jboss.invocation.local.LocalInvoker$MBeanServerAction.invoke(LocalInvoker.java:169)
      2. org.jboss.invocation.local.LocalInvoker.invoke(LocalInvoker.java:118)
      3. org.jboss.invocation.InvokerInterceptor.invokeLocal(InvokerInterceptor.java:209)
      4. org.jboss.invocation.InvokerInterceptor.invoke(InvokerInterceptor.java:195)
      5. org.jboss.proxy.TransactionInterceptor.invoke(TransactionInterceptor.java:61)
      6. org.jboss.proxy.SecurityInterceptor.invoke(SecurityInterceptor.java:70)
      7. org.jboss.proxy.ejb.StatelessSessionInterceptor.invoke(StatelessSessionInterceptor.java:112)
      8. org.jboss.proxy.ClientContainer.invoke(ClientContainer.java:100)
      8 frames
    13. Unknown
      $Proxy769.setProcessFormData
      1. $Proxy769.setProcessFormData(Unknown Source)
      1 frame
    14. Thor.API.Operations
      tcFormInstanceOperationsClient.setProcessFormData
      1. Thor.API.Operations.tcFormInstanceOperationsClient.setProcessFormData(Unknown Source)
      1 frame
    15. Java RT
      Method.invoke
      1. sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      2. sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
      3. sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
      4. java.lang.reflect.Method.invoke(Method.java:597)
      4 frames
    16. Thor.API.Base
      SecurityInvocationHandler$1.run
      1. Thor.API.Base.SecurityInvocationHandler$1.run(Unknown Source)
      1 frame
    17. Thor.API.Security
      jbossLoginSession.runAs
      1. Thor.API.Security.LoginHandler.jbossLoginSession.runAs(Unknown Source)
      1 frame
    18. Thor.API.Base
      SecurityInvocationHandler.invoke
      1. Thor.API.Base.SecurityInvocationHandler.invoke(Unknown Source)
      1 frame
    19. Unknown
      $Proxy813.setProcessFormData
      1. $Proxy813.setProcessFormData(Unknown Source)
      1 frame
    20. com.thortech.xl
      DirectProvisionUserAction.goNext
      1. com.thortech.xl.webclient.actions.DirectProvisionUserAction.handleVerifyProcessData(Unknown Source)
      2. com.thortech.xl.webclient.actions.DirectProvisionUserAction.goNext(Unknown Source)
      2 frames
    21. Java RT
      Method.invoke
      1. sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      2. sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
      3. sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
      4. java.lang.reflect.Method.invoke(Method.java:597)
      4 frames
    22. struts
      DispatchAction.dispatchMethod
      1. org.apache.struts.actions.DispatchAction.dispatchMethod(DispatchAction.java:280)
      1 frame
    23. com.thortech.xl
      tcAction.execute
      1. com.thortech.xl.webclient.actions.tcLookupDispatchAction.execute(Unknown Source)
      2. com.thortech.xl.webclient.actions.tcActionBase.execute(Unknown Source)
      3. com.thortech.xl.webclient.actions.tcAction.execute(Unknown Source)
      3 frames
    24. struts
      ActionServlet.doPost
      1. org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:484)
      2. org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:274)
      3. org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)
      4. org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:525)
      4 frames
    25. JavaServlet
      HttpServlet.service
      1. javax.servlet.http.HttpServlet.service(HttpServlet.java:710)
      2. javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
      2 frames
    26. Glassfish Core
      ApplicationFilterChain.doFilter
      1. org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
      2. org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
      2 frames
    27. com.thortech.xl
      SecurityFilter.doFilter
      1. com.thortech.xl.webclient.security.SecurityFilter.doFilter(Unknown Source)
      1 frame
    28. Glassfish Core
      ApplicationFilterChain.doFilter
      1. org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
      2. org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
      2 frames
    29. JBoss Application Server Tomcat
      ReplyHeaderFilter.doFilter
      1. org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
      1 frame
    30. Glassfish Core
      StandardContextValve.invoke
      1. org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
      2. org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
      3. org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230)
      4. org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
      4 frames
    31. JBoss Application Server Tomcat
      JaccContextValve.invoke
      1. org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:182)
      2. org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:84)
      2 frames
    32. Glassfish Core
      ErrorReportValve.invoke
      1. org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
      2. org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
      2 frames
    33. JBoss Application Server Tomcat
      CachedConnectionValve.invoke
      1. org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:157)
      1 frame
    34. Glassfish Core
      CoyoteAdapter.service
      1. org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
      2. org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:262)
      2 frames
    35. Grizzly HTTP
      JIoEndpoint$Worker.run
      1. org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
      2. org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
      3. org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:446)
      3 frames
    36. Java RT
      Thread.run
      1. java.lang.Thread.run(Thread.java:619)
      1 frame