java.lang.NullPointerException: null

Spring JIRA | Sergey Shcherbakov | 4 years ago
tip
Click on the to mark the solution that helps you, Samebug will learn from it.
As a community member, you’ll be rewarded for you help.
  1. 0

    I'm building a Spring 4 driven application with an embedded Tomcat 8 and SockJS to support WebSocket clients. The latest 4.0.0.BUILD-SNAPSHOT (14.08.2013) as well as 4.0.0.M2 cannot upgrade the incoming HTTP connection to WS with the following exception (for the snapshot version): {noformat} 2013-08-16 10:49:02,711 15913 ERROR [http-nio-8080-exec-4] org.apache.coyote.http11.Http11NioProtocol - Error reading request, ignored java.lang.NullPointerException: null at org.apache.tomcat.websocket.server.WsRemoteEndpointImplServer.<init>(WsRemoteEndpointImplServer.java:57) ~[tomcat-embed-core-8.0.0-RC1.jar:8.0.0-RC1] at org.apache.tomcat.websocket.server.WsHttpUpgradeHandler.init(WsHttpUpgradeHandler.java:116) ~[tomcat-embed-core-8.0.0-RC1.jar:8.0.0-RC1] at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:658) ~[tomcat-embed-core-8.0.0-RC1.jar:8.0.0-RC1] at org.apache.coyote.http11.Http11NioProtocol$Http11ConnectionHandler.process(Http11NioProtocol.java:223) [tomcat-embed-core-8.0.0-RC1.jar:8.0.0-RC1] at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1592) [tomcat-embed-core-8.0.0-RC1.jar:8.0.0-RC1] at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1550) [tomcat-embed-core-8.0.0-RC1.jar:8.0.0-RC1] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [na:1.7.0_17] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [na:1.7.0_17] at java.lang.Thread.run(Thread.java:722) [na:1.7.0_17] {noformat}

    Spring JIRA | 4 years ago | Sergey Shcherbakov
    java.lang.NullPointerException: null
  2. 0

    I'm building a Spring 4 driven application with an embedded Tomcat 8 and SockJS to support WebSocket clients. The latest 4.0.0.BUILD-SNAPSHOT (14.08.2013) as well as 4.0.0.M2 cannot upgrade the incoming HTTP connection to WS with the following exception (for the snapshot version): {noformat} 2013-08-16 10:49:02,711 15913 ERROR [http-nio-8080-exec-4] org.apache.coyote.http11.Http11NioProtocol - Error reading request, ignored java.lang.NullPointerException: null at org.apache.tomcat.websocket.server.WsRemoteEndpointImplServer.<init>(WsRemoteEndpointImplServer.java:57) ~[tomcat-embed-core-8.0.0-RC1.jar:8.0.0-RC1] at org.apache.tomcat.websocket.server.WsHttpUpgradeHandler.init(WsHttpUpgradeHandler.java:116) ~[tomcat-embed-core-8.0.0-RC1.jar:8.0.0-RC1] at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:658) ~[tomcat-embed-core-8.0.0-RC1.jar:8.0.0-RC1] at org.apache.coyote.http11.Http11NioProtocol$Http11ConnectionHandler.process(Http11NioProtocol.java:223) [tomcat-embed-core-8.0.0-RC1.jar:8.0.0-RC1] at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1592) [tomcat-embed-core-8.0.0-RC1.jar:8.0.0-RC1] at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1550) [tomcat-embed-core-8.0.0-RC1.jar:8.0.0-RC1] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [na:1.7.0_17] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [na:1.7.0_17] at java.lang.Thread.run(Thread.java:722) [na:1.7.0_17] {noformat}

    Spring JIRA | 4 years ago | Sergey Shcherbakov
    java.lang.NullPointerException: null
  3. 0

    addMessageHandler NullPointerException with Lambda

    Stack Overflow | 2 years ago
    java.lang.NullPointerException
  4. Speed up your debug routine!

    Automated exception search integrated into your IDE

  5. 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
  6. 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

    Not finding the right solution?
    Take a tour to get the most out of Samebug.

    Tired of useless tips?

    Automated exception search integrated into your IDE

    Root Cause Analysis

    1. java.lang.NullPointerException

      null

      at org.apache.tomcat.websocket.server.WsRemoteEndpointImplServer.<init>()
    2. Tomcat WS
      WsHttpUpgradeHandler.init
      1. org.apache.tomcat.websocket.server.WsRemoteEndpointImplServer.<init>(WsRemoteEndpointImplServer.java:57)[tomcat-embed-core-8.0.0-RC1.jar:8.0.0-RC1]
      2. org.apache.tomcat.websocket.server.WsHttpUpgradeHandler.init(WsHttpUpgradeHandler.java:116)[tomcat-embed-core-8.0.0-RC1.jar:8.0.0-RC1]
      2 frames
    3. Grizzly HTTP
      NioEndpoint$SocketProcessor.run
      1. org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:658)[tomcat-embed-core-8.0.0-RC1.jar:8.0.0-RC1]
      2. org.apache.coyote.http11.Http11NioProtocol$Http11ConnectionHandler.process(Http11NioProtocol.java:223)[tomcat-embed-core-8.0.0-RC1.jar:8.0.0-RC1]
      3. org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1592)[tomcat-embed-core-8.0.0-RC1.jar:8.0.0-RC1]
      4. org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1550)[tomcat-embed-core-8.0.0-RC1.jar:8.0.0-RC1]
      4 frames
    4. Java RT
      Thread.run
      1. java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)[na:1.7.0_17]
      2. java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)[na:1.7.0_17]
      3. java.lang.Thread.run(Thread.java:722)[na:1.7.0_17]
      3 frames