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Hi Charles,

1. In "Chapter 20: Servlet 2.5 and JSP 2.1 Changes" you sumary the changes of Servlet and JSP in JEE 5. Can you explain more of what is the advantages and disadvantages to developers.

2. Java web development is one of the most exciting part of Java technology. And there are so many framework to support this. Do you think it is a good idea to have some introduction, comparision to different frameworks (I know it is out of the scope of the exam, but it may help experience develper to understand the concept better when it is link to something which they are using)

Thanks
 
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I believe chapter 20 of the book is a complementary stuff. You mean you want some more complementary chapters. Usually we dont have choice in complementary things.

It would always be good to have more complementary things.
 
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1. In "Chapter 20: Servlet 2.5 and JSP 2.1 Changes" you sumary the changes of Servlet and JSP in JEE 5. Can you explain more of what is the advantages and disadvantages to developers.

These are mostly minor tweaks - such as the ability to remove extraneous whitespace from JSPs, a couple of deployment descriptor schema changes and the addition of annotations (okay, that one's not such a 'tweak'!). Otherwise it's all about supporting EL 2.1 and deferred expressions - the explanations should help you grasp the subject and (following on from the earlier work on tags) create your own tags which use deferred expressions, although these are mostly set in context within a framework such as JSF...

Do you think it is a good idea to have some introduction, comparision to different frameworks

There are so many of them around - even outside the Enterprise context. To be honest, I've never found any framework all that useful and typically it's quicker for me to create sites using core servlet/JSP/filter components rather than having to write XML configuration files and manage JavaBean updates through a myriad of other interfaces! Of course there are many cases where a framework is warranted as well, especially in very large sites with lots of connecting components, forms etc. I think a guide as to which framework would suit what sort of situation, or indeed whether a framework is required at all, could be useful - but I can't see a document of that sort spanning much more that a dozen pages (certainly not a whole book). The two most popular frameworks at the moment are Struts and JSF (now standard in Java EE 5), so it might be worth investigating just those two to start with.
 
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