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Title: Buy this only if you already know Java EE
Review: This book makes sense only if you already know Java EE, but in that case you don't need it. One of the worst tutorial I've ever seen. Wasted a lot of time trying to understand what it says, but that's so hard because it keeps referring to concepts that are be not covered until later chapters (forward referencing). The examples are working, but no clear explanation on what each of them does, how to reassemble them, etc. No step by step guide. Even concepts aren't explained well enough.
