java.lang.NullPointerException

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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 main.Controller$ColoredCell.updateItem()
    2. main
      Controller$ColoredCell.updateItem
      1. main.Controller$ColoredCell.updateItem(Controller.java:88)
      2. main.Controller$ColoredCell.updateItem(Controller.java:83)
      2 frames
    3. FXSampler
      ListCell$4.invalidated
      1. javafx.scene.control.ListCell.updateItem(ListCell.java:480)
      2. javafx.scene.control.ListCell.access$300(ListCell.java:72)
      3. javafx.scene.control.ListCell$4.invalidated(ListCell.java:299)
      3 frames
    4. javafx.beans.property
      ObjectPropertyBase.set
      1. javafx.beans.property.ObjectPropertyBase.markInvalid(ObjectPropertyBase.java:111)
      2. javafx.beans.property.ObjectPropertyBase.set(ObjectPropertyBase.java:146)
      2 frames
    5. FXSampler
      VirtualFlow.layoutChildren
      1. javafx.scene.control.ListCell.setListView(ListCell.java:305)
      2. javafx.scene.control.ListCell.updateListView(ListCell.java:494)
      3. com.sun.javafx.scene.control.skin.ListViewSkin.createCell(ListViewSkin.java:292)
      4. com.sun.javafx.scene.control.skin.ListViewSkin.lambda$new$366(ListViewSkin.java:99)
      5. com.sun.javafx.scene.control.skin.VirtualFlow.getCell(VirtualFlow.java:1777)
      6. com.sun.javafx.scene.control.skin.VirtualFlow.getCellLength(VirtualFlow.java:1879)
      7. com.sun.javafx.scene.control.skin.VirtualFlow.computeViewportOffset(VirtualFlow.java:2528)
      8. com.sun.javafx.scene.control.skin.VirtualFlow.layoutChildren(VirtualFlow.java:1189)
      8 frames
    6. javafx.scene
      Scene$ScenePulseListener.pulse
      1. javafx.scene.Parent.layout(Parent.java:1087)
      2. javafx.scene.Parent.layout(Parent.java:1093)
      3. javafx.scene.Parent.layout(Parent.java:1093)
      4. javafx.scene.Parent.layout(Parent.java:1093)
      5. javafx.scene.Scene.doLayoutPass(Scene.java:552)
      6. javafx.scene.Scene$ScenePulseListener.pulse(Scene.java:2397)
      6 frames
    7. com.sun.javafx
      Toolkit.lambda$runPulse$30
      1. com.sun.javafx.tk.Toolkit.lambda$runPulse$30(Toolkit.java:355)
      1 frame
    8. Java RT
      AccessController.doPrivileged
      1. java.security.AccessController.doPrivileged(Native Method)
      1 frame
    9. com.sun.javafx
      QuantumToolkit.lambda$runToolkit$404
      1. com.sun.javafx.tk.Toolkit.runPulse(Toolkit.java:354)
      2. com.sun.javafx.tk.Toolkit.firePulse(Toolkit.java:381)
      3. com.sun.javafx.tk.quantum.QuantumToolkit.pulse(QuantumToolkit.java:510)
      4. com.sun.javafx.tk.quantum.QuantumToolkit.pulse(QuantumToolkit.java:490)
      5. com.sun.javafx.tk.quantum.QuantumToolkit.lambda$runToolkit$404(QuantumToolkit.java:319)
      5 frames
    10. com.sun.glass
      GtkApplication.lambda$null$49
      1. com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95)
      2. com.sun.glass.ui.gtk.GtkApplication._runLoop(Native Method)
      3. com.sun.glass.ui.gtk.GtkApplication.lambda$null$49(GtkApplication.java:139)
      3 frames
    11. Java RT
      Thread.run
      1. java.lang.Thread.run(Thread.java:745)
      1 frame