How does webserver provide html components as httprequest

How does a component and it's value in a html page is passed as a HTTPRequest to a JSP page?
eg:
<input type=text name=textbox value="hi>
how is this component sent to my calling JSP page in the form of HTTPRequest,such that the value of the component is available to me when is use the code,
request.getParameter("textbox")?
Can anyone provide with a sample code how this is done?
Thanks in advance.
Regds,
--Jagan.

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My doubt is on STRUTS, if this is not correct forum to ask the questions in struts pls redirect me to the correct forum.
i am very new to struts.......
my question is ,
we are using lot of components like text, button and radio in the jsp file, like
<html:text property="">
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see the below example,
index.jsp
<%@ taglib uri="/WEB-INF/struts-bean.tld" prefix="bean" %>
<%@ taglib uri="/WEB-INF/struts-html.tld" prefix="html" %>
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        <title>Struts File Upload and Save Example</title>
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* StrutsUploadAndSaveForm.java    (Bean)
* Created on September 8, 2007, 4:05 PM
* To change this template, choose Tools | Template Manager
* and open the template in the editor.
package com.myapp.struts;
* @author subbu.chandrasekaran
import org.apache.struts.action.*;
import org.apache.struts.upload.FormFile;
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package com.myapp.struts;
import com.myapp.struts.StrutsUploadAndSaveForm;
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import javax.servlet.http.HttpServletResponse;
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import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.upload.FormFile;
import java.io.*;
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<?xml version="1.0" encoding="ISO-8859-1" ?>
<!DOCTYPE struts-config PUBLIC
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</struts-config>can any one pls give me explanation, how the data is being flow thru out these files.
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hi,
Study MVC once again deeply,
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links for Flow
http://www.ibm.com/developerworks/cn/websphere/techjournal/0302_fung/fung.html
http://java.sun.com/blueprints/patterns/MVC.html
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