How to check for session in JSP EL?

Question

How do you check if a session exists for the request in EL? I\'m trying something like:

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Answer 1

In J2EE there will always be a session object when a user visits a site.

What is a Session ? A session is pretty much what it sounds, when a user makes a page request to the server, the server creates a temporary session to identify that user. So when that same user goes to another page on that site, the server identifies that user. So a session is a small and temporary unique connection between a server and the user enabling it to identify that user across multiple page requests or visits to that site.

So basically if your hitting a page you have a session because your using JSP, which eventually gets converted to servlets.

http://www.stardeveloper.com/articles/display.html?article=2001062001&page=1