Review: Session Tracking
Although it usually uses cookies behind the 
scenes, the session tracking API is higher 
level and easier to use than the cookie API
Session information lives on server
Cookie or extra URL info associates it with a user
Obtaining session
Associating values with keys
Finding values associated with keys
Always check if this value is null before trying to use it
Preview: The Need for JSP
With servlets, it is easy to
Read form data
Read HTTP request headers
Set HTTP status codes and response headers
Use cookies and session tracking
Share data among servlets
Remember data between requests
Get fun, high paying jobs
But, it sure is a pain to
Use those println statements to generate HTML
Maintain that HTML



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