Passing value from one jsp to another?

how to pass value from one jsp to another? i have a value assigned in the link, i want to pass that value to another jsp page?
please help with code?

Instead of the value being passed, i am getting a null value.
Here is my calendar code:
<%@page import="java.util.*,java.text.*" %>
<html>
<head>
<title>Print a month page.</title>
</head>
<body bgcolor="white">
<%
              boolean yyok = false;
              int yy = 0, mm = 0;
              String yyString = request.getParameter("year");
              if (yyString != null && yyString.length() > 0)
                  try
                      yy = Integer.parseInt(yyString);
                              yyok = true;
                   catch (NumberFormatException e)
                      out.println("Year " + yyString + " invalid" );
              Calendar c = Calendar.getInstance( );
              if (!yyok)yy = c.get(Calendar.YEAR);
                     mm = c.get(Calendar.MONTH);
%>
              <table align="center">
                  <tr>
              <td>
                   <form method=post action="calendar.jsp">
                      Enter Year : <select name="year">
<%
             for(int i= yy;i<=2010;i++)
%>
              <OPTION VALUE= <%=i%> > <%=i%> </option>
<%
%>
          </select>
                  <input type=submit value="Display">
                  </form>
                  </td>
                </tr>
<tr>
                 <table>
<%!
String[] months = {"January","February","March",
                "April","May","June",
                "July","August","September",
                "October","November", "December"
int dom[] =     {
                    31, 28, 31, 30,
                    31, 30, 31, 31,
                    30, 31, 30, 31
%>
<%
          int leadGap =0;
%>
<div id="t1" class="tip"><table border="4" cellpadding=3 cellspacing="3" width="250" align="center" bgcolor="lavender">
<tr>
<td halign="centre" colgroup span="7" style="color:#FF0000;">
</colgroup>
<tr>
<td>
<%
          GregorianCalendar calendar =null;
          for(int j=0;j<12;j++)
                    calendar = new GregorianCalendar(yy, j, 1);
              int row = 1 ;
              row = row + j;
    %>
          <table>
            <tr>
          <colgroup span="7" style="color:#FF0000;">
          </colgroup>
            </tr>
          <tr align="center">
          <th colspan=7>
              <%= months[j] %>
              <%= yy %>
          </th>
          </tr>
<tr>
<td>Sun</td><td>Mon</td><td>Tue</td><td>Wed</td><td>Thu</td><td>Fri</td><td>Sat</td>
</tr>
<%
    leadGap = calendar.get(Calendar.DAY_OF_WEEK)-1;
    int daysInMonth = dom[j];
    if ( calendar.isLeapYear( calendar.get(Calendar.YEAR) ) && j == 1)
    ++daysInMonth;
    out.print("<tr>");
    out.print(" ");
      for (int h = 0; h < leadGap; h++)
       out.print("<td>");
      out.print("</td>");
    for (int h = 1; h <= daysInMonth; h++)
      out.print("<td>");
      out.print("<a href=desc.jsp>" + h + "</a>" );
      out.print("</td>");
    if ((leadGap + h) % 7 == 0)
        out.println("</tr>");
out.println("</tr></table></div>");
if( row%3 != 0)
out.println("</td><td>");
else
out.println("</td></tr>\n<tr><td>");
%>
</html>I need to pass the value in 'h' to the desc.jsp page.
my code for desc.jsp is :
<html>
<head>
</head>
<body bgcolor="lightblue">
<form method=post action="Calenda.jsp">
<br>
<%= request.getParameter("h") %>
<h2> Description of the event <INPUT NAME="description" TYPE=TEXT SIZE=20> </h2>
<BR> <INPUT TYPE=SUBMIT VALUE="submit">
</form>
</body>
</html>But i am not able to pass the value. The 'h' value contains all the date. i want to pass only a single date, the user clicks to the other page. please help

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