java.lang.NullPointerException: null

Stack Overflow | D.Kaushish | 5 months 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
  2. 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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  4. 0

    Cloud Foundry v2 in Grails

    Stack Overflow | 2 years ago | angelo087
    java.lang.NullPointerException: Cannot invoke method getAt() on null object
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    NullPointerException in MIDlet with left soft key

    Stack Overflow | 6 years ago | berry120
    java.lang.NullPointerException: 0 at javax.microedition.lcdui.Display$ChameleonTunnel.callItemListener(), bci=57 at com.sun.midp.chameleon.layers.SoftButtonLayer.processCommand(), bci=57 at com.sun.midp.chameleon.layers.SoftButtonLayer.soft1(), bci=37 at com.sun.midp.chameleon.layers.SoftButtonLayer.keyInput(), bci=36 at com.sun.midp.chameleon.CWindow.keyInput(), bci=38 at javax.microedition.lcdui.Display$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

      null

      at com.rabbitmq.client.impl.ChannelN.validateQueueNameLength()
    2. RabbitMQ Java Client
      ChannelN.queueDeclarePassive
      1. com.rabbitmq.client.impl.ChannelN.validateQueueNameLength(ChannelN.java:1232)[amqp-client-3.5.5.jar:na]
      2. com.rabbitmq.client.impl.ChannelN.queueDeclarePassive(ChannelN.java:884)[amqp-client-3.5.5.jar:na]
      3. com.rabbitmq.client.impl.ChannelN.queueDeclarePassive(ChannelN.java:61)[amqp-client-3.5.5.jar:na]
      3 frames
    3. Java RT
      Method.invoke
      1. sun.reflect.GeneratedMethodAccessor334.invoke(Unknown Source)[na:na]
      2. sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)[na:1.8.0_51]
      3. java.lang.reflect.Method.invoke(Method.java:497)[na:1.8.0_51]
      3 frames
    4. Spring RabbitMQ Support
      CachingConnectionFactory$CachedChannelInvocationHandler.invoke
      1. org.springframework.amqp.rabbit.connection.CachingConnectionFactory$CachedChannelInvocationHandler.invoke(CachingConnectionFactory.java:666)[spring-rabbit-1.4.6.RELEASE.jar:na]
      1 frame
    5. com.sun.proxy
      $Proxy181.queueDeclarePassive
      1. com.sun.proxy.$Proxy181.queueDeclarePassive(Unknown Source)[na:na]
      1 frame
    6. Spring RabbitMQ Support
      SimpleMessageListenerContainer$AsyncMessageProcessingConsumer.run
      1. org.springframework.amqp.rabbit.listener.BlockingQueueConsumer.attemptPassiveDeclarations(BlockingQueueConsumer.java:533)[spring-rabbit-1.4.6.RELEASE.jar:na]
      2. org.springframework.amqp.rabbit.listener.BlockingQueueConsumer.start(BlockingQueueConsumer.java:453)[spring-rabbit-1.4.6.RELEASE.jar:na]
      3. org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer$AsyncMessageProcessingConsumer.run(SimpleMessageListenerContainer.java:1083)[spring-rabbit-1.4.6.RELEASE.jar:na]
      3 frames
    7. Java RT
      Thread.run
      1. java.lang.Thread.run(Thread.java:745)[na:1.8.0_51]
      1 frame