Go4Expert - JSP-MYSQL Problem with where condition

Hello every one..plzz solve my problem

here iam specifying where condition in my jsp page but it doesnt work..
with out specifying where condition it displays all data in my table..

iam getting the problem with the where condition in the jsp with MYSQL

and code is..

Class.forName ("com.mysql.jdbc.Driver").newInstance ();

Code:

Connection con = DriverManager.getConnection(url, user, pass);

 Statement stmt=con.createStatement();

 String section=request.getParameter("section");

String QueryString = "SELECT * from students where section='"+section+"'";

                 

          rs = stmt.executeQuery(QueryString);

                  

%>

<TABLE cellpadding="5" border="1" style="background-color: #ffffcc;" align="center">

    <%

    while (rs.next()) {

    %>

        <TR>

        <TD>Regd No</TD>

        <TD>Name</TD>

        <TD>BRANCH</TD>

        </TR>

    <TR>

        

        <TD><%= rs.getString(1) %></TD>

        <TD><%= rs.getString(2) %></TD>

        <TD><%= rs.getString(3) %></TD>

                

    </TR>

        

    <%   }    %>

    <%

    // close all the connections.

    rs.close();

    stmt.close();

    con.close();

}

plzzz.....thanks in advance...