Instruct: Classify Amazon reviews into positive or negative sentiment
Query: The greatest programming book I have ever seen.

Although many books claim that they are books for people with no programming knowledge, this book is by far the most understandable yet not oversimplified.Each example code is complete(not a code snippet), so we can copy, compile and execute it on the spot. The book never introduces any new materials unnecessarily until we cover the easier ones. Its explanations on object-oriented programming was especially great; I could not understand it when I read other books on programming at high school, but I grasped the idea with this one book. For example, the book uses many everyday examples to explain about the relationship between objects and classes. I finished my cs1 course but I still use it for reference. I recommend this book not only as a textbook but also for everyone who wants to start programming.