java.lang.NullPointerException: null

GitHub | a11123939 | 6 months ago
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  1. 0

    GitHub comment 366#250084642

    GitHub | 6 months ago | a11123939
    java.lang.NullPointerException: null
  2. 0

    water mask功能中类型转换错误

    GitHub | 5 months ago | jingbanghu
    java.lang.NullPointerException: null
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  4. 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
  5. 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

      null

      at com.alibaba.rocketmq.broker.BrokerController.headSlowTimeMills()
    2. com.alibaba.rocketmq
      BrokerController$4.run
      1. com.alibaba.rocketmq.broker.BrokerController.headSlowTimeMills(BrokerController.java:423)[rocketmq-broker-3.5.8.jar:na]
      2. com.alibaba.rocketmq.broker.BrokerController.headSlowTimeMills4PullThreadPoolQueue(BrokerController.java:436)[rocketmq-broker-3.5.8.jar:na]
      3. com.alibaba.rocketmq.broker.BrokerController.printWaterMark(BrokerController.java:441)[rocketmq-broker-3.5.8.jar:na]
      4. com.alibaba.rocketmq.broker.BrokerController$4.run(BrokerController.java:260)[rocketmq-broker-3.5.8.jar:na]
      4 frames
    3. Java RT
      Thread.run
      1. java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:439)[na:1.6.0_45]
      2. java.util.concurrent.FutureTask$Sync.innerRunAndReset(FutureTask.java:317)[na:1.6.0_45]
      3. java.util.concurrent.FutureTask.runAndReset(FutureTask.java:150)[na:1.6.0_45]
      4. java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$101(ScheduledThreadPoolExecutor.java:98)[na:1.6.0_45]
      5. java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.runPeriodic(ScheduledThreadPoolExecutor.java:180)[na:1.6.0_45]
      6. java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:204)[na:1.6.0_45]
      7. java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:895)[na:1.6.0_45]
      8. java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918)[na:1.6.0_45]
      9. java.lang.Thread.run(Thread.java:662)[na:1.6.0_45]
      9 frames