Enumeration Objects + Tomcat 4

Hi
I was wondering if anyone can help. I am new to JSP and have recently installed Tomcat 4.
In a JSP file, I had the following code:
<% Enumeration parameters = request.getParameterNames();
while(parameters.hasMoreElements()){
String parameterName = (String)parameters.nextElement();
String parameterValue = request.getParameter(parameterName); %>
<TR>
<TD><%=parameterName%></TD>
<TD><%=parameterValue%></TD>
</TR>
<% } %>
But everytime I try to run the jsp file, I get the following error:
org.apache.jasper.JasperException: Unable to compile class for JSP
An error occured between lines: 47 and 50 in the jsp file: /yasdev/dynamicForm.jsp
Generated servlet error:
C:\tomcat\work\localhost\examples\yasdev\dynamicForm$jsp.java:154: Class org.apache.jsp.Enumeration not found.
Enumeration parameters = request.getParameterNames();
^
1 error
     at org.apache.jasper.compiler.Compiler.compile(Unknown Source)
     at org.apache.jasper.servlet.JspServlet.loadJSP(Unknown Source)
     at org.apache.jasper.servlet.JspServlet$JspServletWrapper.loadIfNecessary(Unknown Source)
     at org.apache.jasper.servlet.JspServlet$JspServletWrapper.service(Unknown Source)
     at org.apache.jasper.servlet.JspServlet.serviceJspFile(Unknown Source)
     at org.apache.jasper.servlet.JspServlet.service(Unknown Source)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Unknown Source)
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(Unknown Source)
     at org.apache.catalina.core.StandardWrapperValve.invoke(Unknown Source)
     at org.apache.catalina.core.StandardPipeline.invokeNext(Unknown Source)
     at org.apache.catalina.core.StandardPipeline.invoke(Unknown Source)
     at org.apache.catalina.core.ContainerBase.invoke(Unknown Source)
     at org.apache.catalina.core.StandardContextValve.invoke(Unknown Source)
     at org.apache.catalina.core.StandardPipeline.invokeNext(Unknown Source)
     at org.apache.catalina.authenticator.AuthenticatorBase.invoke(Unknown Source)
     at org.apache.catalina.core.StandardPipeline.invokeNext(Unknown Source)
     at org.apache.catalina.core.StandardPipeline.invoke(Unknown Source)
     at org.apache.catalina.core.ContainerBase.invoke(Unknown Source)
     at org.apache.catalina.core.StandardContext.invoke(Unknown Source)
     at org.apache.catalina.core.StandardHostValve.invoke(Unknown Source)
     at org.apache.catalina.core.StandardPipeline.invokeNext(Unknown Source)
     at org.apache.catalina.valves.AccessLogValve.invoke(Unknown Source)
     at org.apache.catalina.core.StandardPipeline.invokeNext(Unknown Source)
     at org.apache.catalina.core.StandardPipeline.invoke(Unknown Source)
     at org.apache.catalina.core.ContainerBase.invoke(Unknown Source)
     at org.apache.catalina.core.StandardEngineValve.invoke(Unknown Source)
     at org.apache.catalina.core.StandardPipeline.invokeNext(Unknown Source)
     at org.apache.catalina.core.StandardPipeline.invoke(Unknown Source)
     at org.apache.catalina.core.ContainerBase.invoke(Unknown Source)
     at org.apache.catalina.connector.http.HttpProcessor.process(Unknown Source)
     at org.apache.catalina.connector.http.HttpProcessor.run(Unknown Source)
     at java.lang.Thread.run(Thread.java:484)
Can anyone help? Why is there an error with the Enumeration Object??
Thank You
Yaz

Enumeration is part of the java.util package. You must import it or specify it fully as java.util.Enumeration.

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