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Role of DataPool

 
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I don't think I completely understand Assignment 4b. I can see what DataPool is doing, but I don't understand what the data object is that is being stored in the HashMap.
Also, I'm not sure I understand exactly how Hidden Form Fields work (Who is passing what to whom?). I have been using Wrox Java Server Programming, but they don't go into that topic much at all. Where to look?
 
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The key is that for this assignment if there is any object in DataPool, then the user must have logged in successfully.

One discussion of hidden fields. Another. I'll do a Google search on the subject later if I have time. I have to go to work now.
[ August 14, 2002: Message edited by: Marilyn de Queiroz ]
 
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