Chapter 6. Application and Session Events
In Chapter 3, “Writing Servlet Applications,” you learned how to use the ServletContext object to share information among all the servlets in a web application. You also learned how to obtain this object so that you can use its methods. The ServletContext object is created by the servlet container, and, among other things, it has a method called setAttribute. That method causes the object to act like a Hashtable, where you can store an object that is identified by a key and later retrieve the object by passing the key.
In Chapter 5, “Session Management,” you learned how to create and invalidate the HttpSession ...
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