java.lang.NullPointerException

qpid-users | Rajika Kumarasiri | 6 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 org.apache.qpid.client.AMQSession_0_10.isQueueBound()
    2. Qpid AMQP 0-x JMS Client
      QueueSenderAdapter.send
      1. org.apache.qpid.client.AMQSession_0_10.isQueueBound(AMQSession_0_10.java:528)
      2. org.apache.qpid.client.AMQSession_0_10.isQueueBound(AMQSession_0_10.java:519)
      3. org.apache.qpid.client.BasicMessageProducer_0_10.isBound(BasicMessageProducer_0_10.java:240)
      4. org.apache.qpid.client.QueueSenderAdapter.checkPreConditions(QueueSenderAdapter.java:211)
      5. org.apache.qpid.client.QueueSenderAdapter.checkPreConditions(QueueSenderAdapter.java:173)
      6. org.apache.qpid.client.QueueSenderAdapter.send(QueueSenderAdapter.java:53)
      6 frames
    3. Apache Axis2 - Transport - JMS
      JMSSender.sendMessage
      1. org.apache.axis2.transport.jms.JMSMessageSender.send(JMSMessageSender.java:145)
      2. org.apache.axis2.transport.jms.JMSSender.sendOverJMS(JMSSender.java:203)
      3. org.apache.axis2.transport.jms.JMSSender.sendMessage(JMSSender.java:150)
      3 frames
    4. Apache Axis2 - Transport - Base
      AbstractTransportSender.invoke
      1. org.apache.axis2.transport.base.AbstractTransportSender.invoke(AbstractTransportSender.java:112)
      1 frame
    5. org.apache.axis2
      OperationClient.execute
      1. org.apache.axis2.engine.AxisEngine.send(AxisEngine.java:443)
      2. org.apache.axis2.description.OutOnlyAxisOperationClient.executeImpl(OutOnlyAxisOperation.java:278)
      3. org.apache.axis2.client.OperationClient.execute(OperationClient.java:165)
      3 frames
    6. Apache Synapse - Core
      ProxyServiceMessageReceiver.receive
      1. org.apache.synapse.core.axis2.Axis2FlexibleMEPClient.send(Axis2FlexibleMEPClient.java:410)
      2. org.apache.synapse.core.axis2.Axis2Sender.sendOn(Axis2Sender.java:57)
      3. org.apache.synapse.core.axis2.Axis2SynapseEnvironment.send(Axis2SynapseEnvironment.java:232)
      4. org.apache.synapse.endpoints.AbstractEndpoint.send(AbstractEndpoint.java:256)
      5. org.apache.synapse.endpoints.AddressEndpoint.send(AddressEndpoint.java:59)
      6. org.apache.synapse.core.axis2.ProxyServiceMessageReceiver.receive(ProxyServiceMessageReceiver.java:173)
      6 frames
    7. org.apache.axis2
      AxisEngine.receive
      1. org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:181)
      1 frame
    8. Apache Axis2 - Transport - HTTP
      HTTPTransportUtils.processHTTPPostRequest
      1. org.apache.axis2.transport.http.HTTPTransportUtils.processHTTPPostRequest(HTTPTransportUtils.java:172)
      1 frame
    9. Apache Synapse - Non-blocking HTTP/s Transport
      ServerWorker.run
      1. org.apache.synapse.transport.nhttp.ServerWorker.processEntityEnclosingMethod(ServerWorker.java:413)
      2. org.apache.synapse.transport.nhttp.ServerWorker.run(ServerWorker.java:264)
      2 frames
    10. Apache Axis2 - Transport - Base
      NativeWorkerPool$1.run
      1. org.apache.axis2.transport.base.threads.NativeWorkerPool$1.run(NativeWorkerPool.java:173)
      1 frame
    11. Java RT
      Thread.run
      1. java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
      2. java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
      3. java.lang.Thread.run(Thread.java:619)
      3 frames