Checking session data

Question

I want to require a visitor to visit certain pages on a site in sequence, and thought the easiest way to do this would be to set a session attribute and then check it on any of the following pages. Something like <%session.setAttribute("module", 1);%>I'm not an accomplished programmer and wondered if anyone would be so kind as to help me out with the syntax of the expression and statement in order to do what I explained earlier. For example, if the session attribute does not equal 1 when someone loads module page 2, then they should be redirected back to moduel page 1. Else the attribute would be set to 2, and they could move on to module 3.

Answer 1

Seems what you really want is a Front Controller. Which should probably be a Servlet rather than JSP, if you know Java, it will be much easier to code and test that way. If you don't know Java you are going to have to learn it for either the Servlet or JSP approach, but the Servlet (IMO) would be a cleaner approach to learn in.
In the mean time, you should look up "Model View Controller" patterns, the 'Front Controller' pattern. These things tend to be unique for each application, so giving you code will be useless. But once you understand the pattern you should better be able to create your own solution (or find one that does it for you).