I tried example (hello)given in Apache Tomcat Professional series book but 
got error message while accesing jsp.
Web application has 1 html page index.html and 1 jsp that displays data 
posted form html page. I created directory for application and created 
context using tomcat administrator.
It displays html page but when data is posted and is redirected to jsp 
page I get following error.
I tried jsp examples in Tomcat they work fine.
Error is as follows

Could someone help me figure out resaon for this error Thanks


exception 

javax.servlet.ServletException: org/apache/jasper/runtime/HttpJspBase
	at org.apache.jasper.servlet.JspServlet.service
(JspServlet.java:248)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter
(ApplicationFilterChain.java:247)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter
(ApplicationFilterChain.java:193)
	at org.apache.catalina.core.StandardWrapperValve.invoke
(StandardWrapperValve.java:260)
	at 
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invo
keNext(StandardPipeline.java:643)
	at org.apache.catalina.core.StandardPipeline.invoke
(StandardPipeline.java:480)
	at org.apache.catalina.core.ContainerBase.invoke
(ContainerBase.java:995)
	at org.apache.catalina.core.StandardContextValve.invoke
(StandardContextValve.java:191)
	at 
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invo
keNext(StandardPipeline.java:643)
	at org.apache.catalina.core.StandardPipeline.invoke
(StandardPipeline.java:480)
	at org.apache.catalina.core.ContainerBase.invoke
(ContainerBase.java:995)
	at org.apache.catalina.core.StandardContext.invoke
(StandardContext.java:2396)
	at org.apache.catalina.core.StandardHostValve.invoke
(StandardHostValve.java:180)
	at 
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invo
keNext(StandardPipeline.java:643)
	at org.apache.catalina.valves.ErrorDispatcherValve.invoke
(ErrorDispatcherValve.java:170)
	at 
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invo
keNext(StandardPipeline.java:641)
	at org.apache.catalina.valves.ErrorReportValve.invoke
(ErrorReportValve.java:172)
	at 
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invo
keNext(StandardPipeline.java:641)
	at org.apache.catalina.core.StandardPipeline.invoke
(StandardPipeline.java:480)
	at org.apache.catalina.core.ContainerBase.invoke
(ContainerBase.java:995)
	at org.apache.catalina.core.StandardEngineValve.invoke
(StandardEngineValve.java:174)
	at 
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invo
keNext(StandardPipeline.java:643)
	at org.apache.catalina.core.StandardPipeline.invoke
(StandardPipeline.java:480)
	at org.apache.catalina.core.ContainerBase.invoke
(ContainerBase.java:995)
	at org.apache.coyote.tomcat4.CoyoteAdapter.service
(CoyoteAdapter.java:223)
	at org.apache.coyote.http11.Http11Processor.process
(Http11Processor.java:405)
	at 
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConn
ection(Http11Protocol.java:380)
	at org.apache.tomcat.util.net.TcpWorkerThread.runIt
(PoolTcpEndpoint.java:508)
	at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run
(ThreadPool.java:533)
	at java.lang.Thread.run(Thread.java:536)


root cause 

java.lang.NoClassDefFoundError: org/apache/jasper/runtime/HttpJspBase
	at java.lang.ClassLoader.defineClass0(Native Method)
	at java.lang.ClassLoader.defineClass(ClassLoader.java:502)
	at java.lang.ClassLoader.defineClass(ClassLoader.java:431)
	at org.apache.jasper.servlet.JasperLoader.loadClass
(JasperLoader.java:215)
	at org.apache.jasper.servlet.JasperLoader.loadClass
(JasperLoader.java:131)
	at org.apache.jasper.JspCompilationContext.load
(JspCompilationContext.java:504)
	at org.apache.jasper.servlet.JspServletWrapper.getServlet
(JspServletWrapper.java:145)
	at org.apache.jasper.compiler.Compiler.isOutDated
(Compiler.java:383)
	at org.apache.jasper.compiler.Compiler.isOutDated
(Compiler.java:333)
	at org.apache.jasper.JspCompilationContext.compile
(JspCompilationContext.java:472)
	at org.apache.jasper.servlet.JspServletWrapper.service
(JspServletWrapper.java:184)
	at org.apache.jasper.servlet.JspServlet.serviceJspFile
(JspServlet.java:289)
	at org.apache.jasper.servlet.JspServlet.service
(JspServlet.java:240)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter
(ApplicationFilterChain.java:247)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter
(ApplicationFilterChain.java:193)
	at org.apache.catalina.core.StandardWrapperValve.invoke
(StandardWrapperValve.java:260)
	at 
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invo
keNext(StandardPipeline.java:643)
	at org.apache.catalina.core.StandardPipeline.invoke
(StandardPipeline.java:480)
	at org.apache.catalina.core.ContainerBase.invoke
(ContainerBase.java:995)
	at org.apache.catalina.core.StandardContextValve.invoke
(StandardContextValve.java:191)
	at 
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invo
keNext(StandardPipeline.java:643)
	at org.apache.catalina.core.StandardPipeline.invoke
(StandardPipeline.java:480)
	at org.apache.catalina.core.ContainerBase.invoke
(ContainerBase.java:995)
	at org.apache.catalina.core.StandardContext.invoke
(StandardContext.java:2396)
	at org.apache.catalina.core.StandardHostValve.invoke
(StandardHostValve.java:180)
	at 
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invo
keNext(StandardPipeline.java:643)
	at org.apache.catalina.valves.ErrorDispatcherValve.invoke
(ErrorDispatcherValve.java:170)
	at 
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invo
keNext(StandardPipeline.java:641)
	at org.apache.catalina.valves.ErrorReportValve.invoke
(ErrorReportValve.java:172)
	at 
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invo
keNext(StandardPipeline.java:641)
	at org.apache.catalina.core.StandardPipeline.invoke
(StandardPipeline.java:480)
	at org.apache.catalina.core.ContainerBase.invoke
(ContainerBase.java:995)
	at org.apache.catalina.core.StandardEngineValve.invoke
(StandardEngineValve.java:174)
	at 
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invo
keNext(StandardPipeline.java:643)
	at org.apache.catalina.core.StandardPipeline.invoke
(StandardPipeline.java:480)
	at org.apache.catalina.core.ContainerBase.invoke
(ContainerBase.java:995)
	at org.apache.coyote.tomcat4.CoyoteAdapter.service
(CoyoteAdapter.java:223)
	at org.apache.coyote.http11.Http11Processor.process
(Http11Processor.java:405)
	at 
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConn
ection(Http11Protocol.java:380)
	at org.apache.tomcat.util.net.TcpWorkerThread.runIt
(PoolTcpEndpoint.java:508)
	at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run
(ThreadPool.java:533)
	at java.lang.Thread.run(Thread.java:536)