java.lang.NullPointerException

Coderanch | Vijay Chandran | 8 years ago
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    java.lang.NullPointerException
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    GitHub comment 16#59654563

    GitHub | 2 years ago | wenhongquan
    java.lang.NullPointerException

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    Root Cause Analysis

    1. java.lang.NullPointerException

      No message provided

      at org.apache.catalina.connector.CoyoteWriter.write()
    2. Glassfish Core
      CoyoteWriter.write
      1. org.apache.catalina.connector.CoyoteWriter.write(CoyoteWriter.java:171)
      1 frame
    3. com.scwcd.objective10
      MyTagHandler.doStartTag
      1. com.scwcd.objective10.MyTagHandler.doStartTag(MyTagHandler.java:33)
      1 frame
    4. org.apache.jsp
      CustomTagsOne_jsp._jspService
      1. org.apache.jsp.JSP.objective10.CustomTagsOne_jsp._jspx_meth_myTags_005fmyTag_005f0(CustomTagsOne_jsp.java:91)
      2. org.apache.jsp.JSP.objective10.CustomTagsOne_jsp._jspService(CustomTagsOne_jsp.java:65)
      2 frames
    5. GWT dev
      HttpJspBase.service
      1. org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:98)
      1 frame
    6. JavaServlet
      HttpServlet.service
      1. javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
      1 frame
    7. GWT dev
      JspServlet.service
      1. org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:331)
      2. org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:329)
      3. org.apache.jasper.servlet.JspServlet.service(JspServlet.java:265)
      3 frames
    8. JavaServlet
      HttpServlet.service
      1. javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
      1 frame
    9. Glassfish Core
      CoyoteAdapter.service
      1. org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)
      2. org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
      3. org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
      4. org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:172)
      5. org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
      6. org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
      7. org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108)
      8. org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:174)
      8 frames
    10. Grizzly HTTP
      LeaderFollowerWorkerThread.runIt
      1. org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:875)
      2. org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665)
      3. org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528)
      4. org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81)
      4 frames
    11. Tomcat Util
      ThreadPool$ControlRunnable.run
      1. org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:689)
      1 frame
    12. Java RT
      Thread.run
      1. java.lang.Thread.run(Unknown Source)
      1 frame