java.lang.NullPointerException

Stack Overflow | Ram Eswar | 7 months ago
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Root Cause Analysis

  1. java.lang.NullPointerException

    No message provided

    at report.ReportServlet.doGet()
  2. report
    ReportServlet.doGet
    1. report.ReportServlet.doGet(ReportServlet.java:104)
    1 frame
  3. JavaServlet
    HttpServlet.service
    1. javax.servlet.http.HttpServlet.service(HttpServlet.java:624)
    2. javax.servlet.http.HttpServlet.service(HttpServlet.java:731)
    2 frames
  4. Glassfish Core
    ApplicationFilterChain.doFilter
    1. org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
    2. org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
    2 frames
  5. Tomcat WS
    WsFilter.doFilter
    1. org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
    1 frame
  6. Glassfish Core
    CoyoteAdapter.service
    1. org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
    2. org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
    3. org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
    4. org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
    5. org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:505)
    6. org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:169)
    7. org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
    8. org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:956)
    9. org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
    10. org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:436)
    10 frames
  7. Grizzly HTTP
    JIoEndpoint$SocketProcessor.run
    1. org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1078)
    2. org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:625)
    3. org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316)
    3 frames
  8. Java RT
    ThreadPoolExecutor$Worker.run
    1. java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
    2. java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
    2 frames
  9. Tomcat Util
    TaskThread$WrappingRunnable.run
    1. org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    1 frame
  10. Java RT
    Thread.run
    1. java.lang.Thread.run(Thread.java:744)
    1 frame