user session

How to test for a valid user session in a JSP

Note: This approach is very old; Java/JSP scriptlets were deprecated a long time ago. I don't have time to update this article to the correct, modern approach, but I hope this JSP session example will point you in the right direction.

Every once in a while I'm asked something like, "How can I tell if I have a valid user session in my JSP code?"