A really great book for anyone dealing with Java. It is written in a very clear, precise language that even manages to be entertaining for the biggest part of the time. I think that this book can be equally useful to programmers who are just starting to get to know Java and to professionals seeking optimization possibilities or just a precise reference to the Java resources.
I really liked the part - I of this book. Its concise and to the point. But part - II is about API reference on Java which is about two-third of this book. I would highly recommend this book but only for the first part (we are talking about a book 'in a nutshell !!!'). Second part could have been separated as a second book.