java.lang.NullPointerException

Stack Overflow | grammeler | 8 months ago
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    Spark Nested RDD NullPointException

    Stack Overflow | 8 months ago | grammeler
    java.lang.NullPointerException
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    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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    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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    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

      No message provided

      at org.apache.spark.graphx.impl.GraphImpl.mapVertices()
    2. Spark Project GraphX
      GraphImpl.mapVertices
      1. org.apache.spark.graphx.impl.GraphImpl.mapVertices(GraphImpl.scala:139)
      1 frame
    3. $line500
      $read$$iwC$$iwC$$iwC$$iwC$$iwC$$iwC$$iwC$$iwC$$iwC$$iwC$$iwC$$iwC$$iwC.output
      1. $line500.$read$$iwC$$iwC$$iwC$$iwC$$iwC$$iwC$$iwC$$iwC$$iwC$$iwC$$iwC$$iwC$$iwC.output(<console>:62)
      1 frame
    4. $line505
      $read$$iwC$$iwC$$iwC$$iwC$$iwC$$iwC$$iwC$$iwC$$iwC$$iwC$$iwC$$iwC$$iwC$$anonfun$1.apply
      1. $line505.$read$$iwC$$iwC$$iwC$$iwC$$iwC$$iwC$$iwC$$iwC$$iwC$$iwC$$iwC$$iwC$$iwC$$anonfun$1.apply(<console>:68)
      2. $line505.$read$$iwC$$iwC$$iwC$$iwC$$iwC$$iwC$$iwC$$iwC$$iwC$$iwC$$iwC$$iwC$$iwC$$anonfun$1.apply(<console>:68)
      2 frames
    5. Scala
      AbstractIterator.toArray
      1. scala.collection.Iterator$$anon$11.next(Iterator.scala:328)
      2. scala.collection.Iterator$$anon$10.next(Iterator.scala:312)
      3. scala.collection.Iterator$class.foreach(Iterator.scala:727)
      4. scala.collection.AbstractIterator.foreach(Iterator.scala:1157)
      5. scala.collection.generic.Growable$class.$plus$plus$eq(Growable.scala:48)
      6. scala.collection.mutable.ArrayBuffer.$plus$plus$eq(ArrayBuffer.scala:103)
      7. scala.collection.mutable.ArrayBuffer.$plus$plus$eq(ArrayBuffer.scala:47)
      8. scala.collection.TraversableOnce$class.to(TraversableOnce.scala:273)
      9. scala.collection.AbstractIterator.to(Iterator.scala:1157)
      10. scala.collection.TraversableOnce$class.toBuffer(TraversableOnce.scala:265)
      11. scala.collection.AbstractIterator.toBuffer(Iterator.scala:1157)
      12. scala.collection.TraversableOnce$class.toArray(TraversableOnce.scala:252)
      13. scala.collection.AbstractIterator.toArray(Iterator.scala:1157)
      13 frames
    6. Spark
      Executor$TaskRunner.run
      1. org.apache.spark.rdd.RDD$$anonfun$33.apply(RDD.scala:1177)
      2. org.apache.spark.rdd.RDD$$anonfun$33.apply(RDD.scala:1177)
      3. org.apache.spark.SparkContext$$anonfun$runJob$5.apply(SparkContext.scala:1498)
      4. org.apache.spark.SparkContext$$anonfun$runJob$5.apply(SparkContext.scala:1498)
      5. org.apache.spark.scheduler.ResultTask.runTask(ResultTask.scala:61)
      6. org.apache.spark.scheduler.Task.run(Task.scala:64)
      7. org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:203)
      7 frames
    7. Java RT
      Thread.run
      1. java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
      2. java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
      3. java.lang.Thread.run(Thread.java:745)
      3 frames