Error-java.lang.NoClassDefFoundError: javax/servlet/http/HttpServletRequest

I am receiving this error while running the following:

http://lawuat/servlet/Profile from my web browser. Using Tomcat 4.1.31. I am new to this so any assistance would be greatly appreciated. Thank You!

type Exception report

message

description The server encountered an internal error () that prevented it from fulfilling this request.

exception

javax.servlet.ServletException: Cannot allocate servlet instance for path /servlet/Profile

at org.apache.catalina.servlets.InvokerServlet.serveRequest(InvokerServlet.java:388)

at org.apache.catalina.servlets.InvokerServlet.doGet(InvokerServlet.java:133)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:696)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:809)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:200)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:146)

at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:209)

at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:596)

at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:433)

at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:948)

at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:144)

at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:596)

at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:433)

at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:948)

at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2358)

at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:133)

at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:596)

at org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:118)

at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:594)

at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:116)

at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:594)

at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:433)

at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:948)

at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:127)

at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:596)

at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:433)

at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:948)

at org.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java:152)

at org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:300)

at org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:374)

at org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:743)

at org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:675)

at org.apache.jk.common.SocketConnection.runIt(ChannelSocket.java:866)

at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:683)

at java.lang.Thread.run(Thread.java:570)

root cause

java.lang.NoClassDefFoundError: javax/servlet/http/HttpServletRequest

at java.lang.ClassLoader.findLoadedClass(Native Method)

at java.lang.ClassLoader.loadClass(ClassLoader.java(Compiled Code))

at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java(Compiled Code))

at java.lang.ClassLoader.loadClass(ClassLoader.java(Compiled Code))

at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1319)

at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1252)

at java.lang.Class.forName1(Native Method)

at java.lang.Class.forName(Class.java:180)

at Profile.init(Profile.java:196)

at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:888)

at org.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.java:621)

at org.apache.catalina.servlets.InvokerServlet.serveRequest(InvokerServlet.java:369)