java.lang.NullPointerException

GitHub | miketran78727 | 9 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 | 3 years ago | angelo087
    java.lang.NullPointerException: Cannot invoke method getAt() on null object
  5. 0

    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

      No message provided

      at org.eclipse.paho.client.mqttv3.MqttTopic.validate()
    2. org.eclipse.paho
      MqttAsyncClient.unsubscribe
      1. org.eclipse.paho.client.mqttv3.MqttTopic.validate(MqttTopic.java:147)
      2. org.eclipse.paho.client.mqttv3.MqttAsyncClient.unsubscribe(MqttAsyncClient.java:917)
      3. org.eclipse.paho.client.mqttv3.MqttAsyncClient.unsubscribe(MqttAsyncClient.java:898)
      3 frames
    3. com.ibm.iotf
      ManagedDevice$ManagedDeviceClient.unsubscribe
      1. com.ibm.iotf.devicemgmt.device.ManagedDevice.unsubscribe(ManagedDevice.java:636)
      2. com.ibm.iotf.devicemgmt.device.ManagedDevice$ManagedDeviceClient.unsubscribe(ManagedDevice.java:977)
      2 frames
    4. com.ibm.internal
      DMRequestHandler.clearRequestHandlers
      1. com.ibm.internal.iotf.devicemgmt.handler.DMRequestHandler.clearRequestHandlers(DMRequestHandler.java:239)
      1 frame
    5. com.ibm.iotf
      ManagedDevice.sendUnmanageRequest
      1. com.ibm.iotf.devicemgmt.device.ManagedDevice.sendUnmanageRequest(ManagedDevice.java:530)
      1 frame
    6. com.ibm.iotcloud
      FirmwareActions.teardownTest
      1. com.ibm.iotcloud.test.jmeter.sampler.dm.FirmwareActions.deleteDevice(FirmwareActions.java:193)
      2. com.ibm.iotcloud.test.jmeter.sampler.dm.FirmwareActions.teardownTest(FirmwareActions.java:256)
      2 frames
    7. Apache JMeter Java
      JavaSampler.testEnded
      1. org.apache.jmeter.protocol.java.sampler.JavaSampler.testEnded(JavaSampler.java:292)
      1 frame
    8. Apache JMeter Core
      StandardJMeterEngine.run
      1. org.apache.jmeter.engine.StandardJMeterEngine.notifyTestListenersOfEnd(StandardJMeterEngine.java:215)
      2. org.apache.jmeter.engine.StandardJMeterEngine.run(StandardJMeterEngine.java:436)
      2 frames
    9. Java RT
      Thread.run
      1. java.lang.Thread.run(Unknown Source)
      1 frame