Form Tag Issue

Question

Hi!
am facing problem while submitting form through DropDown using onChange event!
Here i have two form tags and two drop down .in first form tag contain one drop down and
Second form tag contain another Drop down ..
when i change first drop down it redirects to the page properly, and i chose another drop down it redirect the page which is specified in first form tag,it is not redirect to the page which is specified in second form tag..
pls give me your suggestion regarding my issue...
<%
try{
Connection con,con1;
    Statement st,st1;
    ResultSet rs,rs1,rs2;
    ResultSetMetaData rsm,rsm1;
    List data=new ArrayList();
    List data1=new ArrayList();
    Iterator itr,itr1;
    String val,val1;
    int i=0;
    String dep[]=new String[100];
    int deplen;
    String dsn="jdbc:odbc:project";
            Class.forName("oracle.jdbc.driver.OracleDriver");
            con=DriverManager.getConnection(dsn,"module7","module7");
            st=con.createStatement();
            rs=st.executeQuery("select collname from college");
                        while(rs.next())
                            data.add(rs.getString(1));
                            i++;
           // rs1=st.executeQuery("select subcode from subject where sem not in '"+session.getAttribute("sem")+"' and dep='"+session.getAttribute("dep")+"' and sem1='"+session.getAttribute("mon1")+"' and currorarrear='Arrear'  order by subcode");
%>
    <form  name="f1" action="Coll" method="POST" >
        <table align="center" border="0">
                <tr>
                    <td>Select the College</td>
                    <td>
                        <select  class="red"  name="coll" id="s11" onchange="this.form.submit();">
                        <option value="Select">--------Select--------</option>
                            <%
                            try{
                        for(itr=data.iterator();itr.hasNext();)
                        val=itr.next().toString();
                            //out.print("111");
                        %>
                        <option value="<%=val%>"><%=val%></option>
                        <%}%>
                </select></td>
                </tr>
                   </form><%}catch(Exception e){}%>
                <form name="f2" action="CollDep" method="POST">
<%try{
    data1=(ArrayList)session.getAttribute("dep");
    if(session.getAttribute("dep").toString()!=null)
    {%>
               <tr>
                    <td>Select the Department</td>
                    <td><select name="univ" id="arr1" onchange="this.form.submit();">
                       <option>Department</option>
                       <%
                        for(itr=data1.iterator();itr.hasNext();)
                        val=itr.next().toString();
                      %>
                             <option value=<%=val%>><%=val%></option>
                        <%}%>
</select></td>
                </tr></form><%}}catch(Exception e){}%>
        </table>
        <center><input type="submit" value="Submit" name="b1" onclick="" /></center>
<%
}catch(Exception e){out.println(e);}
%>
           

Answer 1

The [HTML specification|http://www.w3.org/TR/html401/] forbids you to nest <form> elements.
That said, writing raw Java code in a JSP file is a bad practice. It makes it hard to read as well. Keep business/data logic in Java classes (servlets, DAO's, beans) and use taglibs/EL only in JSP.