java.lang.NullPointerException

Oracle Community | josealvarezdelara | 7 years ago
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  1. 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
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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
  4. 0

    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.sun.enterprise.deployment.util.EjbBundleValidator.accept()
    2. Deployment Object Library
      ApplicationFactory.openWith
      1. com.sun.enterprise.deployment.util.EjbBundleValidator.accept(EjbBundleValidator.java:780)
      2. com.sun.enterprise.deployment.WebBundleDescriptor.visit(WebBundleDescriptor.java:1862)
      3. com.sun.enterprise.deployment.Application.visit(Application.java:1756)
      4. com.sun.enterprise.deployment.archivist.ApplicationArchivist.validate(ApplicationArchivist.java:774)
      5. com.sun.enterprise.deployment.archivist.ApplicationArchivist.openWith(ApplicationArchivist.java:253)
      6. com.sun.enterprise.deployment.archivist.ApplicationFactory.openWith(ApplicationFactory.java:222)
      6 frames
    3. Deployment Related JavaEE Core Classes
      DolProvider.load
      1. org.glassfish.javaee.core.deployment.DolProvider.load(DolProvider.java:145)
      2. org.glassfish.javaee.core.deployment.DolProvider.load(DolProvider.java:78)
      2 frames
    4. Kernel Classes
      ApplicationLifecycle.deploy
      1. com.sun.enterprise.v3.server.ApplicationLifecycle.loadDeployer(ApplicationLifecycle.java:612)
      2. com.sun.enterprise.v3.server.ApplicationLifecycle.setupContainerInfos(ApplicationLifecycle.java:554)
      3. com.sun.enterprise.v3.server.ApplicationLifecycle.deploy(ApplicationLifecycle.java:262)
      4. com.sun.enterprise.v3.server.ApplicationLifecycle.deploy(ApplicationLifecycle.java:183)
      4 frames
    5. Embedded GlassFish Web
      DeployCommand.execute
      1. org.glassfish.deployment.admin.DeployCommand.execute(DeployCommand.java:272)
      1 frame
    6. Kernel Classes
      AdminAdapter.service
      1. com.sun.enterprise.v3.admin.CommandRunnerImpl$1.execute(CommandRunnerImpl.java:305)
      2. com.sun.enterprise.v3.admin.CommandRunnerImpl.doCommand(CommandRunnerImpl.java:320)
      3. com.sun.enterprise.v3.admin.CommandRunnerImpl.doCommand(CommandRunnerImpl.java:1176)
      4. com.sun.enterprise.v3.admin.CommandRunnerImpl.access$900(CommandRunnerImpl.java:83)
      5. com.sun.enterprise.v3.admin.CommandRunnerImpl$ExecutionContext.execute(CommandRunnerImpl.java:1235)
      6. com.sun.enterprise.v3.admin.CommandRunnerImpl$ExecutionContext.execute(CommandRunnerImpl.java:1224)
      7. com.sun.enterprise.v3.admin.AdminAdapter.doCommand(AdminAdapter.java:365)
      8. com.sun.enterprise.v3.admin.AdminAdapter.service(AdminAdapter.java:204)
      8 frames
    7. Grizzly WS
      GrizzlyAdapter.service
      1. com.sun.grizzly.tcp.http11.GrizzlyAdapter.service(GrizzlyAdapter.java:166)
      1 frame
    8. Kernel Classes
      ContainerMapper.service
      1. com.sun.enterprise.v3.server.HK2Dispatcher.dispath(HK2Dispatcher.java:100)
      2. com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:245)
      2 frames
    9. Grizzly WS
      AbstractThreadPool$Worker.run
      1. com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:791)
      2. com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:693)
      3. com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:954)
      4. com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:170)
      5. com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:135)
      6. com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:102)
      7. com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:88)
      8. com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:76)
      9. com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:53)
      10. com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:57)
      11. com.sun.grizzly.ContextTask.run(ContextTask.java:69)
      12. com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:330)
      13. com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:309)
      13 frames
    10. Java RT
      Thread.run
      1. java.lang.Thread.run(Thread.java:619)
      1 frame