java.lang.NullPointerException

GitHub | momothereal | 8 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
  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 net.glowstone.net.handler.play.player.BlockPlacementHandler.handle()
    2. net.glowstone.net
      BlockPlacementHandler.handle
      1. net.glowstone.net.handler.play.player.BlockPlacementHandler.handle(BlockPlacementHandler.java:129)
      2. net.glowstone.net.handler.play.player.BlockPlacementHandler.handle(BlockPlacementHandler.java:22)
      2 frames
    3. net.glowstone.libs
      BasicSession.messageReceived
      1. net.glowstone.libs.com.flowpowered.network.session.BasicSession.handleMessage(BasicSession.java:80)
      2. net.glowstone.libs.com.flowpowered.network.session.BasicSession.messageReceived(BasicSession.java:139)
      2 frames
    4. net.glowstone.net
      GlowSession.pulse
      1. net.glowstone.net.GlowSession.pulse(GlowSession.java:462)
      1 frame
    5. Java RT
      ConcurrentHashMap$KeySetView.forEach
      1. java.util.concurrent.ConcurrentHashMap$KeySetView.forEach(Unknown Source)
      1 frame
    6. net.glowstone.net
      SessionRegistry.pulse
      1. net.glowstone.net.SessionRegistry.pulse(SessionRegistry.java:23)
      1 frame
    7. net.glowstone.scheduler
      GlowScheduler.lambda$start$39
      1. net.glowstone.scheduler.GlowScheduler.pulse(GlowScheduler.java:144)
      2. net.glowstone.scheduler.GlowScheduler.lambda$start$39(GlowScheduler.java:83)
      2 frames
    8. Java RT
      Thread.run
      1. java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
      2. java.util.concurrent.FutureTask.runAndReset(Unknown Source)
      3. java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(Unknown Source)
      4. java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(Unknown Source)
      5. java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
      6. java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
      7. java.lang.Thread.run(Unknown Source)
      7 frames