Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Not good if you are looking for quick info..

As several have mentioned, this book is not for you if you want to LEARN java. It's for you if you want to brush up occasionally about what something means. You need to remember that something will be explained later and not necessarily where it occurs. This book is NOT a TUTORIAl. It's is more a reference.