java.lang.NullPointerException

GitHub | nathan130200 | 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
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  3. 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
  4. 0

    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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    Root Cause Analysis

    1. java.lang.NullPointerException

      No message provided

      at mytown.config.json.RanksConfig.validate()
    2. mytown.config.json
      RanksConfig.validate
      1. mytown.config.json.RanksConfig.validate(RanksConfig.java:48)[RanksConfig.class:?]
      2. mytown.config.json.RanksConfig.validate(RanksConfig.java:11)[RanksConfig.class:?]
      2 frames
    3. myessentials.json.api
      JsonConfig.read
      1. myessentials.json.api.JsonConfig.read(JsonConfig.java:99)[JsonConfig.class:?]
      1 frame
    4. mytown.config.json
      RanksConfig.read
      1. mytown.config.json.RanksConfig.read(RanksConfig.java:33)[RanksConfig.class:?]
      2. mytown.config.json.RanksConfig.read(RanksConfig.java:11)[RanksConfig.class:?]
      2 frames
    5. myessentials.json.api
      JsonConfig.init
      1. myessentials.json.api.JsonConfig.init(JsonConfig.java:49)[JsonConfig.class:?]
      2. myessentials.json.api.JsonConfig.init(JsonConfig.java:33)[JsonConfig.class:?]
      2 frames
    6. mytown
      MyTown.serverStarting
      1. mytown.MyTown.serverStarting(MyTown.java:90)[MyTown.class:?]
      1 frame
    7. Java RT
      Method.invoke
      1. sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)[?:1.8.0_91]
      2. sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)[?:1.8.0_91]
      3. sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)[?:1.8.0_91]
      4. java.lang.reflect.Method.invoke(Unknown Source)[?:1.8.0_91]
      4 frames
    8. MC Forge
      FMLModContainer.handleModStateEvent
      1. cpw.mods.fml.common.FMLModContainer.handleModStateEvent(FMLModContainer.java:532)[FMLModContainer.class:1.7.10-1614.57]
      1 frame
    9. Java RT
      Method.invoke
      1. sun.reflect.GeneratedMethodAccessor3.invoke(Unknown Source)[?:?]
      2. sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)[?:1.8.0_91]
      3. java.lang.reflect.Method.invoke(Unknown Source)[?:1.8.0_91]
      3 frames
    10. Guava
      EventBus.post
      1. com.google.common.eventbus.EventSubscriber.handleEvent(EventSubscriber.java:74)[server-1.7.10.jar:?]
      2. com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47)[server-1.7.10.jar:?]
      3. com.google.common.eventbus.EventBus.dispatch(EventBus.java:322)[server-1.7.10.jar:?]
      4. com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304)[server-1.7.10.jar:?]
      5. com.google.common.eventbus.EventBus.post(EventBus.java:275)[server-1.7.10.jar:?]
      5 frames
    11. MC Forge
      LoadController.propogateStateMessage
      1. cpw.mods.fml.common.LoadController.sendEventToModContainer(LoadController.java:212)[LoadController.class:1.7.10-1614.57]
      2. cpw.mods.fml.common.LoadController.propogateStateMessage(LoadController.java:190)[LoadController.class:1.7.10-1614.57]
      2 frames
    12. Java RT
      Method.invoke
      1. sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)[?:1.8.0_91]
      2. sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)[?:1.8.0_91]
      3. sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)[?:1.8.0_91]
      4. java.lang.reflect.Method.invoke(Unknown Source)[?:1.8.0_91]
      4 frames
    13. Guava
      EventBus.post
      1. com.google.common.eventbus.EventSubscriber.handleEvent(EventSubscriber.java:74)[server-1.7.10.jar:?]
      2. com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47)[server-1.7.10.jar:?]
      3. com.google.common.eventbus.EventBus.dispatch(EventBus.java:322)[server-1.7.10.jar:?]
      4. com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304)[server-1.7.10.jar:?]
      5. com.google.common.eventbus.EventBus.post(EventBus.java:275)[server-1.7.10.jar:?]
      5 frames
    14. MC Forge
      FMLCommonHandler.handleServerStarting
      1. cpw.mods.fml.common.LoadController.distributeStateMessage(LoadController.java:119)[LoadController.class:1.7.10-1614.57]
      2. cpw.mods.fml.common.Loader.serverStarting(Loader.java:789)[Loader.class:1.7.10-1614.57]
      3. cpw.mods.fml.common.FMLCommonHandler.handleServerStarting(FMLCommonHandler.java:282)[FMLCommonHandler.class:1.7.10-1614.57]
      3 frames
    15. MC Server
      MinecraftServer.run
      1. net.minecraft.server.dedicated.DedicatedServer.func_71197_b(DedicatedServer.java:368)[lt.class:?]
      2. net.minecraft.server.MinecraftServer.run(MinecraftServer.java:643)[MinecraftServer.class:?]
      2 frames
    16. Java RT
      Thread.run
      1. java.lang.Thread.run(Unknown Source)[?:1.8.0_91]
      1 frame