java.lang.NullPointerException

GitHub | hc4 | 8 months ago
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  2. 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
  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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    Root Cause Analysis

    1. java.lang.NullPointerException

      No message provided

      at org.graylog2.indexer.indices.Indices.checkForReopened()
    2. graylog2-server
      Indices.lambda$areReopened$1
      1. org.graylog2.indexer.indices.Indices.checkForReopened(Indices.java:382)[graylog.jar:?]
      2. org.graylog2.indexer.indices.Indices.lambda$areReopened$1(Indices.java:377)[graylog.jar:?]
      2 frames
    3. Java RT
      ReferencePipeline.collect
      1. java.util.stream.Collectors.lambda$toMap$58(Collectors.java:1321)[?:1.8.0_91]
      2. java.util.stream.ReduceOps$3ReducingSink.accept(ReduceOps.java:169)[?:1.8.0_91]
      3. java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1540)[?:1.8.0_91]
      4. java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481)[?:1.8.0_91]
      5. java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471)[?:1.8.0_91]
      6. java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708)[?:1.8.0_91]
      7. java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)[?:1.8.0_91]
      8. java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:499)[?:1.8.0_91]
      8 frames
    4. graylog2-server
      IndexerOverviewResource.index
      1. org.graylog2.indexer.indices.Indices.areReopened(Indices.java:376)[graylog.jar:?]
      2. org.graylog2.rest.resources.system.indexer.IndexerOverviewResource.index(IndexerOverviewResource.java:83)[graylog.jar:?]
      2 frames
    5. Java RT
      Method.invoke
      1. sun.reflect.GeneratedMethodAccessor136.invoke(Unknown Source)[?:?]
      2. sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)[?:1.8.0_91]
      3. java.lang.reflect.Method.invoke(Method.java:498)[?:1.8.0_91]
      3 frames
    6. jersey-core-server
      ServerRuntime$2.run
      1. org.glassfish.jersey.server.model.internal.ResourceMethodInvocationHandlerFactory$1.invoke(ResourceMethodInvocationHandlerFactory.java:81)[graylog.jar:?]
      2. org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher$1.run(AbstractJavaResourceMethodDispatcher.java:144)[graylog.jar:?]
      3. org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.invoke(AbstractJavaResourceMethodDispatcher.java:161)[graylog.jar:?]
      4. org.glassfish.jersey.server.model.internal.JavaResourceMethodDispatcherProvider$TypeOutInvoker.doDispatch(JavaResourceMethodDispatcherProvider.java:205)[graylog.jar:?]
      5. org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.dispatch(AbstractJavaResourceMethodDispatcher.java:99)[graylog.jar:?]
      6. org.glassfish.jersey.server.model.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:389)[graylog.jar:?]
      7. org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:347)[graylog.jar:?]
      8. org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:102)[graylog.jar:?]
      9. org.glassfish.jersey.server.ServerRuntime$2.run(ServerRuntime.java:326)[graylog.jar:?]
      9 frames
    7. Jersey Core
      RequestScope.runInScope
      1. org.glassfish.jersey.internal.Errors$1.call(Errors.java:271)[graylog.jar:?]
      2. org.glassfish.jersey.internal.Errors$1.call(Errors.java:267)[graylog.jar:?]
      3. org.glassfish.jersey.internal.Errors.process(Errors.java:315)[graylog.jar:?]
      4. org.glassfish.jersey.internal.Errors.process(Errors.java:297)[graylog.jar:?]
      5. org.glassfish.jersey.internal.Errors.process(Errors.java:267)[graylog.jar:?]
      6. org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:317)[graylog.jar:?]
      6 frames
    8. jersey-core-server
      ApplicationHandler.handle
      1. org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:305)[graylog.jar:?]
      2. org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:1154)[graylog.jar:?]
      2 frames
    9. jersey-container-grizzly2-http
      GrizzlyHttpContainer.service
      1. org.glassfish.jersey.grizzly2.httpserver.GrizzlyHttpContainer.service(GrizzlyHttpContainer.java:384)[graylog.jar:?]
      1 frame
    10. Grizzly Server
      HttpHandler$1.run
      1. org.glassfish.grizzly.http.server.HttpHandler$1.run(HttpHandler.java:224)[graylog.jar:?]
      1 frame
    11. Metrics Core
      InstrumentedExecutorService$InstrumentedRunnable.run
      1. com.codahale.metrics.InstrumentedExecutorService$InstrumentedRunnable.run(InstrumentedExecutorService.java:176)[graylog.jar:?]
      1 frame
    12. Java RT
      Thread.run
      1. java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)[?:1.8.0_91]
      2. java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)[?:1.8.0_91]
      3. java.lang.Thread.run(Thread.java:745)[?:1.8.0_91]
      3 frames