java.lang.NullPointerException

GitHub | miketran78727 | 4 months ago
  1. 0

    Null pointer in Paho Java client WebSocket classes

    GitHub | 10 months ago | jpwsutton
    java.lang.NullPointerException
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  3. 0

    ToLowerCase()

    GitHub | 8 months ago | jpmens
    java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String java.lang.String.toLowerCase()' on a null object reference
  4. 0

    NPE when MqttAsyncClient is closed after unsuccessful connect

    GitHub | 8 months ago | surmay
    java.lang.NullPointerException: Attempt to invoke virtual method 'void org.eclipse.paho.client.mqttv3.internal.CommsTokenStore.quiesce(org.eclipse.paho.client.mqttv3.MqttException)' on a null object reference

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    Root Cause Analysis

    1. java.lang.NullPointerException

      No message provided

      at org.eclipse.paho.client.mqttv3.internal.websocket.WebSocketHandshake.receiveHandshakeResponse()
    2. org.eclipse.paho
      ClientComms$ConnectBG.run
      1. org.eclipse.paho.client.mqttv3.internal.websocket.WebSocketHandshake.receiveHandshakeResponse(WebSocketHandshake.java:133)
      2. org.eclipse.paho.client.mqttv3.internal.websocket.WebSocketHandshake.execute(WebSocketHandshake.java:74)
      3. org.eclipse.paho.client.mqttv3.internal.websocket.WebSocketNetworkModule.start(WebSocketNetworkModule.java:78)
      4. org.eclipse.paho.client.mqttv3.internal.ClientComms$ConnectBG.run(ClientComms.java:650)
      4 frames