Why do you read this book, "Java Programming Idea"

Learning programming language at school is just plain understanding, there are a lot of things that do not understand, want to pass this book to the Java language has a deeper understanding, for future study and work will have great benefits. Rather than a cursory look at some of your books, know it but do not know why, this is not what I want to learn.

The reading of this book I usually read in class, there are some things to remember and I think important things on the blog, this is what I use the purpose of the blog, I think important things to record.

Why do you read this book, "Java Programming Idea"