Instruct: Classify Amazon reviews into positive or negative sentiment
Query: not for beginners

This book commits the same sin of most Java introductions, it assumes you are familiar with OOP concepts & programming. The preface said it doesn't but it does. Also, there are very few complete examples. In some places there are very few examples of any sort. No programming book worth it's pulp should be so devoid of examples. Last, the book is far too wordy & not enough nuts & bolts. Not a good reference or intro.