Instruct: Classify Amazon reviews into positive or negative sentiment
Query: The book that is still highly valuable

It is already more than 3.5 years when I have succesfully passed the certification exam. Anyway. Last year I bought this book. My motivation was to look into "Java Developer" part. Still I have not read it all. But even so I can tell the book has still its high value (though nowadays The Java Tiger 5.0 is out in the World).Sometimes I open the book, skim a few pages, shift a bookmarker and feel more educated, because I will always find interesting information about Java language. It is also very helpful to "practise" your knowledge of Java language thanks certification questions and keys to them.Do not forget that this book includes CD with a lot of useful material for fortifying of your programming skills.