I would have voted zero stars if they'd let me. I was looking for a book to give me an in-depth understanding of Sun's web server product and the title said 'CORE Java Web Server'. What was I to think? If you want to learn how to administer this product, the authors give you 63 pages to learn that. On page 155 they declare "Enough with the Theory, Let's Code!" Apparently 'theory' is understanding the server. What they really wanted to do was write a book on Servlets but even their handling of that subject doesn't even come close to the O'Reilly book. If it isn't 'COOL' these guys don't want to deal with it. I am SICK of 'COOL'. I am tired of spending money on half-books.