BeanUtils.populate..

[Mallik Avula]

HI all
i am using nested tag in my page, and i am getting the page well. but when i submit, i am doing the validation and redisplaying the form if any errors there.
that time i am getting problem.
my jsp code:

   
 
<nested:hidden property="questionId"></nested:hidden>
<nested:equal property="mandatoryFlag" value="1">
<font color="red">*</font><nested:write property="questionBody"/>
</nested:equal>
<nested:equal property="mandatoryFlag" value="0">
<nested:write property="questionBody"/>
</nested:equal>
</b>
<br>
<nested:iterate property="options">
<nested:checkbox property="optionId" value="off"><nested:write property="optionDesc"/></nested:checkbox>
      
</nested:iterate>
</nested:iterate>
 

exception is:

 
 
 BeanUtils.populate
        at org.apache.struts.util.RequestUtils.populate(RequestUtils.java:453)
        at org.apache.struts.chain.commands.servlet.PopulateActionForm.populate(PopulateActionForm.java:45)
        at org.apache.struts.chain.commands.AbstractPopulateActionForm.execute(AbstractPopulateActionForm.java:57)
        at org.apache.struts.chain.commands.ActionCommandBase.execute(ActionCommandBase.java:48)
        at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:190)
        at org.apache.commons.chain.generic.LookupCommand.execute(LookupCommand.java:304)
        at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:190)
        at org.apache.struts.chain.ComposableRequestProcessor.process(ComposableRequestProcessor.java:280)
        at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1858)
        at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:459)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:710)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
        at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
        at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:179)
        at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:84)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
        at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:157)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:262)
        at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
        at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
        at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:446)
        at java.lang.Thread.run(Thread.java:595)
Caused by: java.lang.IndexOutOfBoundsException: Index: 18, Size: 0
        at java.util.ArrayList.RangeCheck(ArrayList.java:546)
        at java.util.ArrayList.get(ArrayList.java:321)
        at org.apache.commons.beanutils.PropertyUtilsBean.getIndexedProperty(PropertyUtilsBean.java:433)
        at org.apache.commons.beanutils.PropertyUtilsBean.getIndexedProperty(PropertyUtilsBean.java:340)
        at org.apache.commons.beanutils.PropertyUtilsBean.getNestedProperty(PropertyUtilsBean.java:684)
        at org.apache.commons.beanutils.PropertyUtilsBean.getProperty(PropertyUtilsBean.java:715)
        at org.apache.commons.beanutils.BeanUtilsBean.setProperty(BeanUtilsBean.java:884)
        at org.apache.commons.beanutils.BeanUtilsBean.populate(BeanUtilsBean.java:811)
        at org.apache.commons.beanutils.BeanUtils.populate(BeanUtils.java:298)
        at org.apache.struts.util.RequestUtils.populate(RequestUtils.java:451)
        ... 29 more
16:07:23,095 WARN  [ExceptionCatcher] Exception from exceptionCommand 'servlet-exception'
javax.servlet.ServletException: BeanUtils.populate
        at org.apache.struts.util.RequestUtils.populate(RequestUtils.java:453)
        at org.apache.struts.chain.commands.servlet.PopulateActionForm.populate(PopulateActionForm.java:45)
        at org.apache.struts.chain.commands.AbstractPopulateActionForm.execute(AbstractPopulateActionForm.java:57)
        at org.apache.struts.chain.commands.ActionCommandBase.execute(ActionCommandBase.java:48)
        at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:190)
        at org.apache.commons.chain.generic.LookupCommand.execute(LookupCommand.java:304)
        at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:190)
        at org.apache.struts.chain.ComposableRequestProcessor.process(ComposableRequestProcessor.java:280)
        at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1858)
        at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:459)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:710)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
        at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
        at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:179)
        at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:84)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
        at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:157)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:262)
        at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
        at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
        at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:446)
        at java.lang.Thread.run(Thread.java:595)
Caused by: java.lang.IndexOutOfBoundsException: Index: 18, Size: 0
        at java.util.ArrayList.RangeCheck(ArrayList.java:546)
        at java.util.ArrayList.get(ArrayList.java:321)
        at org.apache.commons.beanutils.PropertyUtilsBean.getIndexedProperty(PropertyUtilsBean.java:433)
        at org.apache.commons.beanutils.PropertyUtilsBean.getIndexedProperty(PropertyUtilsBean.java:340)
        at org.apache.commons.beanutils.PropertyUtilsBean.getNestedProperty(PropertyUtilsBean.java:684)
        at org.apache.commons.beanutils.PropertyUtilsBean.getProperty(PropertyUtilsBean.java:715)
        at org.apache.commons.beanutils.BeanUtilsBean.setProperty(BeanUtilsBean.java:884)
        at org.apache.commons.beanutils.BeanUtilsBean.populate(BeanUtilsBean.java:811)
        at org.apache.commons.beanutils.BeanUtils.populate(BeanUtils.java:298)
        at org.apache.struts.util.RequestUtils.populate(RequestUtils.java:451)
        ... 29 more
16:07:23,096 ERROR [[action]] Servlet.service() for servlet action threw exception
java.lang.IndexOutOfBoundsException: Index: 18, Size: 0
        at java.util.ArrayList.RangeCheck(ArrayList.java:546)
        at java.util.ArrayList.get(ArrayList.java:321)
        at org.apache.commons.beanutils.PropertyUtilsBean.getIndexedProperty(PropertyUtilsBean.java:433)
        at org.apache.commons.beanutils.PropertyUtilsBean.getIndexedProperty(PropertyUtilsBean.java:340)
        at org.apache.commons.beanutils.PropertyUtilsBean.getNestedProperty(PropertyUtilsBean.java:684)
        at org.apache.commons.beanutils.PropertyUtilsBean.getProperty(PropertyUtilsBean.java:715)
        at org.apache.commons.beanutils.BeanUtilsBean.setProperty(BeanUtilsBean.java:884)
        at org.apache.commons.beanutils.BeanUtilsBean.populate(BeanUtilsBean.java:811)
        at org.apache.commons.beanutils.BeanUtils.populate(BeanUtils.java:298)
        at org.apache.struts.util.RequestUtils.populate(RequestUtils.java:451)
        at org.apache.struts.chain.commands.servlet.PopulateActionForm.populate(PopulateActionForm.java:45)
        at org.apache.struts.chain.commands.AbstractPopulateActionForm.execute(AbstractPopulateActionForm.java:57)
        at org.apache.struts.chain.commands.ActionCommandBase.execute(ActionCommandBase.java:48)
        at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:190)
        at org.apache.commons.chain.generic.LookupCommand.execute(LookupCommand.java:304)
        at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:190)
        at org.apache.struts.chain.ComposableRequestProcessor.process(ComposableRequestProcessor.java:280)
        at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1858)
        at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:459)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:710)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
        at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
        at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:179)
        at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:84)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
        at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:157)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:262)
        at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
        at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
        at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:446)
        at java.lang.Thread.run(Thread.java:595)
16:07:36,578 WARN  [AbstractExceptionHandler] Unhandled exception
javax.servlet.ServletException: BeanUtils.populate
        at org.apache.struts.util.RequestUtils.populate(RequestUtils.java:453)
        at org.apache.struts.chain.commands.servlet.PopulateActionForm.populate(PopulateActionForm.java:45)
        at org.apache.struts.chain.commands.AbstractPopulateActionForm.execute(AbstractPopulateActionForm.java:57)
        at org.apache.struts.chain.commands.ActionCommandBase.execute(ActionCommandBase.java:48)
        at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:190)
        at org.apache.commons.chain.generic.LookupCommand.execute(LookupCommand.java:304)
        at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:190)
        at org.apache.struts.chain.ComposableRequestProcessor.process(ComposableRequestProcessor.java:280)
        at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1858)
        at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:459)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:710)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
        at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
        at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:179)
        at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:84)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
        at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:157)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:262)
        at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
        at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
        at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:446)
        at java.lang.Thread.run(Thread.java:595)
Caused by: java.lang.IndexOutOfBoundsException: Index: 18, Size: 0
        at java.util.ArrayList.RangeCheck(ArrayList.java:546)
        at java.util.ArrayList.get(ArrayList.java:321)
        at org.apache.commons.beanutils.PropertyUtilsBean.getIndexedProperty(PropertyUtilsBean.java:433)
        at org.apache.commons.beanutils.PropertyUtilsBean.getIndexedProperty(PropertyUtilsBean.java:340)
        at org.apache.commons.beanutils.PropertyUtilsBean.getNestedProperty(PropertyUtilsBean.java:684)
        at org.apache.commons.beanutils.PropertyUtilsBean.getProperty(PropertyUtilsBean.java:715)
        at org.apache.commons.beanutils.BeanUtilsBean.setProperty(BeanUtilsBean.java:884)
        at org.apache.commons.beanutils.BeanUtilsBean.populate(BeanUtilsBean.java:811)
        at org.apache.commons.beanutils.BeanUtils.populate(BeanUtils.java:298)
        at org.apache.struts.util.RequestUtils.populate(RequestUtils.java:451)
        ... 29 more
16:07:36,580 WARN  [ExceptionCatcher] Exception from exceptionCommand 'servlet-exception'
javax.servlet.ServletException: BeanUtils.populate
        at org.apache.struts.util.RequestUtils.populate(RequestUtils.java:453)
        at org.apache.struts.chain.commands.servlet.PopulateActionForm.populate(PopulateActionForm.java:45)
        at org.apache.struts.chain.commands.AbstractPopulateActionForm.execute(AbstractPopulateActionForm.java:57)
        at org.apache.struts.chain.commands.ActionCommandBase.execute(ActionCommandBase.java:48)
        at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:190)
        at org.apache.commons.chain.generic.LookupCommand.execute(LookupCommand.java:304)
        at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:190)
        at org.apache.struts.chain.ComposableRequestProcessor.process(ComposableRequestProcessor.java:280)
        at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1858)
        at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:459)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:710)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
        at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
        at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:179)
        at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:84)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
        at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:157)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:262)
        at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
        at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
        at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:446)
        at java.lang.Thread.run(Thread.java:595)
Caused by: java.lang.IndexOutOfBoundsException: Index: 18, Size: 0
        at java.util.ArrayList.RangeCheck(ArrayList.java:546)
        at java.util.ArrayList.get(ArrayList.java:321)
        at org.apache.commons.beanutils.PropertyUtilsBean.getIndexedProperty(PropertyUtilsBean.java:433)
        at org.apache.commons.beanutils.PropertyUtilsBean.getIndexedProperty(PropertyUtilsBean.java:340)
        at org.apache.commons.beanutils.PropertyUtilsBean.getNestedProperty(PropertyUtilsBean.java:684)
        at org.apache.commons.beanutils.PropertyUtilsBean.getProperty(PropertyUtilsBean.java:715)
        at org.apache.commons.beanutils.BeanUtilsBean.setProperty(BeanUtilsBean.java:884)
        at org.apache.commons.beanutils.BeanUtilsBean.populate(BeanUtilsBean.java:811)
        at org.apache.commons.beanutils.BeanUtils.populate(BeanUtils.java:298)
        at org.apache.struts.util.RequestUtils.populate(RequestUtils.java:451)
        ... 29 more
16:07:36,580 ERROR [[action]] Servlet.service() for servlet action threw exception
java.lang.IndexOutOfBoundsException: Index: 18, Size: 0
        at java.util.ArrayList.RangeCheck(ArrayList.java:546)
        at java.util.ArrayList.get(ArrayList.java:321)
        at org.apache.commons.beanutils.PropertyUtilsBean.getIndexedProperty(PropertyUtilsBean.java:433)
        at org.apache.commons.beanutils.PropertyUtilsBean.getIndexedProperty(PropertyUtilsBean.java:340)
        at org.apache.commons.beanutils.PropertyUtilsBean.getNestedProperty(PropertyUtilsBean.java:684)
        at org.apache.commons.beanutils.PropertyUtilsBean.getProperty(PropertyUtilsBean.java:715)
        at org.apache.commons.beanutils.BeanUtilsBean.setProperty(BeanUtilsBean.java:884)
        at org.apache.commons.beanutils.BeanUtilsBean.populate(BeanUtilsBean.java:811)
        at org.apache.commons.beanutils.BeanUtils.populate(BeanUtils.java:298)
        at org.apache.struts.util.RequestUtils.populate(RequestUtils.java:451)
        at org.apache.struts.chain.commands.servlet.PopulateActionForm.populate(PopulateActionForm.java:45)
        at org.apache.struts.chain.commands.AbstractPopulateActionForm.execute(AbstractPopulateActionForm.java:57)
        at org.apache.struts.chain.commands.ActionCommandBase.execute(ActionCommandBase.java:48)
        at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:190)
        at org.apache.commons.chain.generic.LookupCommand.execute(LookupCommand.java:304)
        at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:190)
        at org.apache.struts.chain.ComposableRequestProcessor.process(ComposableRequestProcessor.java:280)
        at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1858)
        at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:459)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:710)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
        at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
        at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:179)
        at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:84)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
        at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:157)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:262)
        at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
        at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
        at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:446)
        at java.lang.Thread.run(Thread.java:595)
 
   

any body can help?

[Merrill Higginson]

I suspect this problem is occurring because you have placed your ActionForm in request scope and have not provided "lazy initialization" capability for your indexed getters. Because you have a fairly complex structure of questions and options that would be hard to recreate, I would recommmend that you specify session scope for the ActionForm in this case.

This article will give you some more insights as to why this is happening.