java.lang.NullPointerException

GitHub | TheGlave | 7 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 android.os.storage.StorageManager.getVolumeList()
    2. Android Platform
      Environment.getExternalStorageDirectory
      1. android.os.storage.StorageManager.getVolumeList(StorageManager.java:922)
      2. android.os.Environment$UserEnvironment.getExternalDirs(Environment.java:87)
      3. android.os.Environment.getExternalStorageDirectory(Environment.java:404)
      3 frames
    3. org.osmdroid.tileprovider
      MapTileProviderArray.getMapTile
      1. org.osmdroid.tileprovider.constants.OpenStreetMapTileProviderConstants.<clinit>(OpenStreetMapTileProviderConstants.java:24)
      2. org.osmdroid.tileprovider.MapTileProviderArray.getMapTile(MapTileProviderArray.java:93)
      2 frames
    4. org.osmdroid.views
      TilesOverlay$1.handleTile
      1. org.osmdroid.views.overlay.TilesOverlay$1.handleTile(TilesOverlay.java:182)
      1 frame
    5. org.osmdroid.util
      TileLooper.loop
      1. org.osmdroid.util.TileLooper.loop(TileLooper.java:34)
      1 frame
    6. org.osmdroid.views
      MapView.dispatchDraw
      1. org.osmdroid.views.overlay.TilesOverlay.drawTiles(TilesOverlay.java:161)
      2. org.osmdroid.views.overlay.TilesOverlay.draw(TilesOverlay.java:148)
      3. org.osmdroid.views.overlay.DefaultOverlayManager.onDraw(DefaultOverlayManager.java:107)
      4. org.osmdroid.views.MapView.dispatchDraw(MapView.java:996)
      4 frames
    7. Android Platform
      View.draw
      1. android.view.View.draw(View.java:16973)
      2. android.view.ViewGroup.drawChild_Original(ViewGroup.java:3764)
      3. android.view.ViewGroup_Delegate.drawChild(ViewGroup_Delegate.java:61)
      4. android.view.ViewGroup.drawChild(ViewGroup.java:3764)
      5. android.view.ViewGroup.dispatchDraw(ViewGroup.java:3550)
      6. android.view.View.draw(View.java:16973)
      7. android.view.ViewGroup.drawChild_Original(ViewGroup.java:3764)
      8. android.view.ViewGroup_Delegate.drawChild(ViewGroup_Delegate.java:61)
      9. android.view.ViewGroup.drawChild(ViewGroup.java:3764)
      10. android.view.ViewGroup.dispatchDraw(ViewGroup.java:3550)
      11. android.view.View.draw(View.java:16973)
      12. android.view.ViewGroup.drawChild_Original(ViewGroup.java:3764)
      13. android.view.ViewGroup_Delegate.drawChild(ViewGroup_Delegate.java:61)
      14. android.view.ViewGroup.drawChild(ViewGroup.java:3764)
      15. android.view.ViewGroup.dispatchDraw(ViewGroup.java:3550)
      16. android.view.View.draw(View.java:16973)
      17. android.view.ViewGroup.drawChild_Original(ViewGroup.java:3764)
      18. android.view.ViewGroup_Delegate.drawChild(ViewGroup_Delegate.java:61)
      19. android.view.ViewGroup.drawChild(ViewGroup.java:3764)
      20. android.view.ViewGroup.dispatchDraw(ViewGroup.java:3550)
      21. android.view.View.draw(View.java:17070)
      21 frames
    8. com.android.layoutlib
      Bridge.createSession
      1. com.android.layoutlib.bridge.impl.RenderSessionImpl.render(RenderSessionImpl.java:387)
      2. com.android.layoutlib.bridge.impl.RenderSessionImpl.render(RenderSessionImpl.java:498)
      3. com.android.layoutlib.bridge.Bridge.createSession(Bridge.java:434)
      3 frames
    9. com.android.tools.sdk-common
      LayoutLibrary.createSession
      1. com.android.ide.common.rendering.LayoutLibrary.createSession(LayoutLibrary.java:350)
      1 frame
    10. com.android.tools
      RenderTask$2.compute
      1. com.android.tools.idea.rendering.RenderTask$2.compute(RenderTask.java:520)
      2. com.android.tools.idea.rendering.RenderTask$2.compute(RenderTask.java:508)
      2 frames
    11. IDEA
      ApplicationImpl.runReadAction
      1. com.intellij.openapi.application.impl.ApplicationImpl.runReadAction(ApplicationImpl.java:967)
      1 frame
    12. com.android.tools
      RenderTask.render
      1. com.android.tools.idea.rendering.RenderTask.createRenderSession(RenderTask.java:508)
      2. com.android.tools.idea.rendering.RenderTask.access$600(RenderTask.java:75)
      3. com.android.tools.idea.rendering.RenderTask$3.call(RenderTask.java:620)
      4. com.android.tools.idea.rendering.RenderTask$3.call(RenderTask.java:617)
      5. com.android.tools.idea.rendering.RenderService.runRenderAction(RenderService.java:371)
      6. com.android.tools.idea.rendering.RenderTask.render(RenderTask.java:617)
      7. com.android.tools.idea.rendering.RenderTask.render(RenderTask.java:639)
      7 frames
    13. IntelliJ android module
      AndroidDesignerEditorPanel$7.run
      1. com.intellij.android.designer.designSurface.AndroidDesignerEditorPanel$7.run(AndroidDesignerEditorPanel.java:519)
      1 frame
    14. Openapi
      QueueProcessor.runSafely
      1. com.intellij.util.ui.update.MergingUpdateQueue.execute(MergingUpdateQueue.java:337)
      2. com.intellij.util.ui.update.MergingUpdateQueue.execute(MergingUpdateQueue.java:327)
      3. com.intellij.util.ui.update.MergingUpdateQueue$3.run(MergingUpdateQueue.java:271)
      4. com.intellij.util.ui.update.MergingUpdateQueue.flush(MergingUpdateQueue.java:286)
      5. com.intellij.util.ui.update.MergingUpdateQueue.flush(MergingUpdateQueue.java:244)
      6. com.intellij.util.ui.update.MergingUpdateQueue.run(MergingUpdateQueue.java:234)
      7. com.intellij.util.concurrency.QueueProcessor.runSafely(QueueProcessor.java:238)
      7 frames
    15. IDEA
      Alarm$Request$1.run
      1. com.intellij.util.Alarm$Request$1.run(Alarm.java:352)
      1 frame
    16. Java RT
      Thread.run
      1. java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
      2. java.util.concurrent.FutureTask.run(FutureTask.java:266)
      3. java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
      4. java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
      5. java.lang.Thread.run(Thread.java:745)
      5 frames