java.lang.NullPointerException

GitHub | damithc | 9 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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    Cloud Foundry v2 in Grails

    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 address.model.ModelManager.personHasOngoingChange()
    2. address.model
      ModelManager.deletePersonThroughUI
      1. address.model.ModelManager.personHasOngoingChange(ModelManager.java:256)
      2. address.model.ModelManager.deletePersonThroughUI(ModelManager.java:185)
      2 frames
    3. address.controller
      PersonOverviewController.lambda$handleDeletePersons$13
      1. address.controller.PersonOverviewController.lambda$handleDeletePersons$13(PersonOverviewController.java:127)
      1 frame
    4. Java RT
      ReferencePipeline$Head.forEach
      1. java.util.Iterator.forEachRemaining(Iterator.java:116)
      2. java.util.Spliterators$IteratorSpliterator.forEachRemaining(Spliterators.java:1801)
      3. java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:580)
      3 frames
    5. address.controller
      PersonOverviewController.lambda$createContextMenu$20
      1. address.controller.PersonOverviewController.handleDeletePersons(PersonOverviewController.java:125)
      2. address.controller.PersonOverviewController.lambda$createContextMenu$20(PersonOverviewController.java:215)
      2 frames
    6. com.sun.javafx
      EventUtil.fireEvent
      1. com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:86)
      2. com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238)
      3. com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191)
      4. com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58)
      5. com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
      6. com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74)
      7. com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:49)
      7 frames
    7. javafx.event
      Event.fireEvent
      1. javafx.event.Event.fireEvent(Event.java:198)
      1 frame
    8. FXSampler
      MenuItem.fire
      1. javafx.scene.control.MenuItem.fire(MenuItem.java:462)
      1 frame
    9. com.sun.javafx
      EventUtil.fireEvent
      1. com.sun.javafx.scene.control.ControlAcceleratorSupport.lambda$doAcceleratorInstall$12(ControlAcceleratorSupport.java:165)
      2. com.sun.javafx.scene.KeyboardShortcutsHandler.processAccelerators(KeyboardShortcutsHandler.java:347)
      3. com.sun.javafx.scene.KeyboardShortcutsHandler.dispatchBubblingEvent(KeyboardShortcutsHandler.java:163)
      4. com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59)
      5. com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58)
      6. com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
      7. com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
      8. com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
      9. com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74)
      10. com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:54)
      10 frames
    10. javafx.event
      Event.fireEvent
      1. javafx.event.Event.fireEvent(Event.java:198)
      1 frame
    11. javafx.scene
      Scene$ScenePeerListener.keyEvent
      1. javafx.scene.Scene$KeyHandler.process(Scene.java:3964)
      2. javafx.scene.Scene$KeyHandler.access$1800(Scene.java:3910)
      3. javafx.scene.Scene.impl_processKeyEvent(Scene.java:2040)
      4. javafx.scene.Scene$ScenePeerListener.keyEvent(Scene.java:2501)
      4 frames
    12. com.sun.javafx
      GlassViewEventHandler$KeyEventNotification.run
      1. com.sun.javafx.tk.quantum.GlassViewEventHandler$KeyEventNotification.run(GlassViewEventHandler.java:197)
      2. com.sun.javafx.tk.quantum.GlassViewEventHandler$KeyEventNotification.run(GlassViewEventHandler.java:147)
      2 frames
    13. Java RT
      AccessController.doPrivileged
      1. java.security.AccessController.doPrivileged(Native Method)
      1 frame
    14. com.sun.javafx
      GlassViewEventHandler.handleKeyEvent
      1. com.sun.javafx.tk.quantum.GlassViewEventHandler.lambda$handleKeyEvent$353(GlassViewEventHandler.java:228)
      2. com.sun.javafx.tk.quantum.QuantumToolkit.runWithoutRenderLock(QuantumToolkit.java:389)
      3. com.sun.javafx.tk.quantum.GlassViewEventHandler.handleKeyEvent(GlassViewEventHandler.java:227)
      3 frames
    15. com.sun.glass
      WinApplication.lambda$null$148
      1. com.sun.glass.ui.View.handleKeyEvent(View.java:546)
      2. com.sun.glass.ui.View.notifyKey(View.java:966)
      3. com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
      4. com.sun.glass.ui.win.WinApplication.lambda$null$148(WinApplication.java:191)
      4 frames
    16. Java RT
      Thread.run
      1. java.lang.Thread.run(Thread.java:745)
      1 frame