here r 2 JSPs, the login.jsp gets params and after validating them, it adds the param into cookies and forwards 2 home.jsp, in home.jsp I want 2 get the cookie that was added in login.jsp, but when 1st time home.jsp is loaded, there iz no such cookie... so, can n.e body tell me what iz the problem with this code?

login.jsp
=========
<%!
String uname,pwd;
Cookie userCookie;
%>
<%
uname=request.getParameter("uname");
pwd=request.getParameter("pwd");
if(uname.equals("hello") && pwd.equals("world"))
{
    userCookie=new Cookie("user",uname);
    response.addCookie(userCookie);
%>
    <jsp:forward page="home.jsp"/>
<%
}
else
{
    out.println("<h3>Invalid user</h3>");
}
%>

home.jsp
========
<%!
Cookie[] cookies;
Cookie userCookie;
boolean found;
%>
<%
cookies=request.getCookies();
found=false;
for(int i=0;i<cookies.length;i++)
{
    userCookie=cookies[i];
    if(userCookie.getValue().equals("hello"))
    {
        found=true;
        break;
    }
    if(found==true)
    {
        out.println("<h1> Hello World </h1>");
    }
    else
    {
        out.println("<h1> Sorry </h1>");
    }
}
%>

Generaly, you have two methods to navigate your clients to another page :

1. Forward
2. Redirect

When you use redirect method, server will sends a http response to client and asks him to send a new request for destination page. Using forward method, will not sends any response to client, but navigates same request object to destination page directly.

As I see in your code snippets, you are using first method (forwarding) to navigate your client to 'home.jsp'. So in 'home.jsp' you are accessing same request object that you had in 'login.jsp', that has no cookie. Because your response object (containing your cookie) has not been sent to client. Your cookies will be accessible from next incoming request.