java.lang.NullPointerException: Attempt to invoke virtual method 'io.socket.emitter.Emitter io.socket.engineio.client.Transport.once(java.lang.String, io.socket.emitter.Emitter$Listener)' on a null object reference

GitHub | jayrambhia | 6 months ago
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  1. 0

    GitHub comment 62#247243373

    GitHub | 6 months ago | jayrambhia
    java.lang.NullPointerException: Attempt to invoke virtual method 'io.socket.emitter.Emitter io.socket.engineio.client.Transport.once(java.lang.String, io.socket.emitter.Emitter$Listener)' on a null object reference
  2. 0

    NullPointerException from 0.8.0

    GitHub | 6 months ago | hamberluo
    java.lang.NullPointerException: Attempt to invoke virtual method 'io.socket.b.a io.socket.engineio.client.c.b(java.lang.String, io.socket.b.a$a)' on a null object reference
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  4. 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
  5. 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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    Root Cause Analysis

    1. java.lang.NullPointerException

      Attempt to invoke virtual method 'io.socket.emitter.Emitter io.socket.engineio.client.Transport.once(java.lang.String, io.socket.emitter.Emitter$Listener)' on a null object reference

      at io.socket.engineio.client.Socket$7.call()
    2. io.socket.engineio
      Socket$7.call
      1. io.socket.engineio.client.Socket$7.call(Socket.java:336)
      1 frame
    3. io.socket.emitter
      Emitter.emit
      1. io.socket.emitter.Emitter$OnceListener.call(Emitter.java:164)
      2. io.socket.emitter.Emitter.emit(Emitter.java:117)
      2 frames
    4. io.socket.engineio
      WebSocket$1$1.run
      1. io.socket.engineio.client.Transport.onOpen(Transport.java:115)
      2. io.socket.engineio.client.transports.WebSocket.access$100(WebSocket.java:32)
      3. io.socket.engineio.client.transports.WebSocket$1$1.run(WebSocket.java:82)
      3 frames
    5. io.socket.thread
      EventThread$2.run
      1. io.socket.thread.EventThread$2.run(EventThread.java:80)
      1 frame
    6. Java RT
      Thread.run
      1. java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1113)
      2. java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588)
      3. java.lang.Thread.run(Thread.java:818)
      3 frames