Instruct: Classify the given review into positive or negative sentiment.
Query: Nice introduction to frameworks

I guess framework is now a buzzword in the IT market. If you want to know more about it, read this book.Java Application Frameworks is a necessity for managers as well as developers diving deep into the development of applications. It introduces to the reader basic application concepts as well as introduces some well known java frameworks like collection framework, infobus etc. For framework developers, it introduces them to the details of constructing and designing one. If you are diving into building a framework, read this book first.This is definitely a book that is worth the money.For readers who wants to know more about application framework, read the book "Building Application Frameworks" by Mohamed E Fayad, Douglas C. Schmidt, Ralph E. Johnson.