javaBean , and jstl

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<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ taglib prefix="fmt" uri="http://java.sun.com/jsp/jstl/fmt" %>

<%@ page contentType="text/html;charset=gb2312" language="java" %>
<%@ page import="mybeans.Student" %>

<fmt:requestEncoding value="gb2312" />

<jsp:useBean id="stu" class="mybeans.Student" scope="request" />
<%--<jsp:setProperty name="stu" property="*" />--%>
<jsp:setProperty name="stu" property="name" param="name"/>
<jsp:setProperty name="stu" property="age" param="age" />
<jsp:setProperty name="stu" property="passwd" param="passwd" />
<html>
<head>
<title>el1.jsp</title>
</head>

   <tr>
    <td>age  : <jsp:getProperty name="stu" property="age" /></td>
    <td>age  : <%=request.getParameter("age")%></td>
   </tr>
   <tr>
    <td>password : <jsp:getProperty name="stu" property="passwd" /></td>
    <td>password : <%=request.getParameter( "passwd" ) %></td>
   </tr>

  </table>

  <br><br>
  <table width="50%" >
   <tr>
    <td>name : ${param.name}</td>
    <td>name : ${param["name"]}</td>
   </tr>
   <tr>
    <td>age  : ${param.age}</td>
    <td>age  : ${param["age"]}</td>
   </tr>

   <tr>
    <td>password : ${param.passwd}</td>
    <td>password : ${param["passwd"]}</td>
   </tr>
  </table>

  <br><br>
  Please input a student's information <p>
  <form name="student" action="el1.jsp" method="post" >
   <table border="0" >

    <tr>
     <td>NAME: </td>
     <td><input type="text" name="name" /></td>
    </tr>

    <tr>
     <td>AGE: </td>
     <td><input type="text" name="age" /></td>
    </tr>

    <tr>
     <td>PASSWORD: </td>
     <td><input type="password" name="passwd" /></td>
    </tr>

<tr>

    </tr>
   </table>
  </form>

</body>

</html>