java.lang.NullPointerException

xml-xindice-users | Andy Putnins | 8 years ago
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    xml-xindice-users | 8 years ago | Andy Putnins
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    Xupdate throws namespace-related NPE

    xml-xindice-users | 8 years ago | Andy Putnins
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    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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    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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    Root Cause Analysis

    1. java.lang.NullPointerException

      No message provided

      at org.apache.xindice.xml.NamespaceMap.getContextNode()
    2. org.apache.xindice
      RPCMessageInterface.run
      1. org.apache.xindice.xml.NamespaceMap.getContextNode(NamespaceMap.java:63)
      2. org.apache.xindice.core.xupdate.XUpdateImpl.execute(XUpdateImpl.java:99)
      3. org.apache.xindice.core.xupdate.XUpdateQueryResolver$XUpdateQuery.execute(XUpdateQueryResolver.java:141)
      4. org.apache.xindice.core.xupdate.XUpdateQueryResolver.query(XUpdateQueryResolver.java:83)
      5. org.apache.xindice.core.query.QueryEngine.query(QueryEngine.java:126)
      6. org.apache.xindice.core.Collection.queryDocument(Collection.java:1291)
      7. org.apache.xindice.server.rpc.messages.Query.execute(Query.java:58)
      8. org.apache.xindice.server.rpc.RPCMessageInterface.run(RPCMessageInterface.java:49)
      8 frames
    3. Java RT
      Method.invoke
      1. sun.reflect.GeneratedMethodAccessor28.invoke(Unknown Source)
      2. sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
      3. java.lang.reflect.Method.invoke(Method.java:597)
      3 frames
    4. Apache XML-RPC Common Library
      XmlRpcServer.execute
      1. org.apache.xmlrpc.Invoker.execute(XmlRpcServer.java)
      2. org.apache.xmlrpc.XmlRpcServer$Worker.executeInternal(XmlRpcServer.java)
      3. org.apache.xmlrpc.XmlRpcServer$Worker.execute(XmlRpcServer.java)
      4. org.apache.xmlrpc.XmlRpcServer.execute(XmlRpcServer.java)
      5. org.apache.xmlrpc.XmlRpcServer.execute(XmlRpcServer.java)
      5 frames
    5. org.apache.xindice
      XindiceServlet.doPost
      1. org.apache.xindice.server.XindiceServlet.doPost(XindiceServlet.java:92)
      1 frame
    6. JavaServlet
      HttpServlet.service
      1. javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
      2. javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
      2 frames
    7. Glassfish Core
      CoyoteAdapter.service
      1. org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
      2. org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
      3. org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
      4. org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
      5. org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
      6. org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
      7. org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
      8. org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286)
      8 frames
    8. Grizzly HTTP
      JIoEndpoint$Worker.run
      1. org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:845)
      2. org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
      3. org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
      3 frames
    9. Java RT
      Thread.run
      1. java.lang.Thread.run(Thread.java:619)
      1 frame