Java EE (Java Enterprise Edition) General Discussion

i set the session attribute in one jsp file using session.setAttribute() and retrieve it in another using session.getAttribute..The return value for session.getAttribute is null,

I also tried using HTTP session,the result is same.

First jsp file

<%@ page import="database.DBFunctions" %>
<%@ page import="java.sql.ResultSet" %>
<%@ page import="java.io.PrintWriter" %>
<%@ page import="javax.servlet.http.HttpSession" %>
<%@ page import="read.Create" %>
<%@ page language="java" %>


<%
    PrintWriter writer = response.getWriter();
    //HttpSession varSession = request.getSession();
    
    String uname = request.getParameter("UserName");
    String pword = request.getParameter("PassWord");
    
    DBFunctions func = new DBFunctions();
    int bool = func.validate(uname);
    
    
    if(bool==1){
        func.insertLogin(uname, pword);
        ResultSet rs = func.getUid(uname, pword);
        
        if(rs.next()){
            int userid = rs.getInt("uid");
            writer.println(userid);
            System.out.println("adduser"+userid);
            session.setAttribute("uid",userid);
            
            //varSession.setAttribute("uid", new Integer(userid));
            Create cnew = new Create();
            cnew.createUser(userid);
        }
       writer.println(bool); 
    }     
    else{
        writer.println(bool);
    }
    
    
%>

2nd jsp file:

<%@ page import="read.Json" %>
<%@ page import="read.Create" %>
<%@ page import="org.json.JSONObject" %>
<%@ page import="java.io.PrintWriter" %>
<%@ page language="java" session="true" %>

<%
    PrintWriter writer = response.getWriter();
    //HttpSession varSession = request.getSession();
    //Object uid1 = session.getAttribute("uid");
    /*if(varSession.isNew()){
        System.out.println("new user");
    }else{
        */
    
    String a = (String) session.getAttribute("uid");
    writer.println(a);
    
    //Object uid1 = varSession.getAttribute("uid");
    Object uid1 = session.getAttribute("uid");
    String sheetName = request.getParameter("SheetName");
    String bookName = request.getParameter("WorkBook");
    writer.println(bookName);
    writer.println((String)uid1);
    
    Create cdoc = new Create();
    int docid1 = cdoc.createDoc(uid1,bookName,sheetName);
    
    session.setAttribute("docid", new Integer(docid1));
    //varSession.setAttribute("docid", new Integer(docid));
    writer.println(bookName);
    //} 

 
%>

I used the suggestions given in a similar thread:
http://forum.java.sun.com/thread.jspa?threadID=219818&messageID=767466

It didnt work for me...
please help!!!!1