说明：  作者以写小说的方式来介绍设计模式，是我目前见到的最好的设计模式介绍的书。其中的代码示例采用的Java语言。作者在开篇写道：我希望这本书的阅读者具备最基本的代码编写能力，您是一个初级的 coder,可以从中领会到怎么设计一段优秀的代码；您是一个高级程序员，可以从中全面了解到设计模式以及
(On the way to writing a novel to introduce design patterns, I now see the best design pattern described in the book. Sample code which uses the Java language. The author begins: I hope readers of this book have the basic ability to write code, you are a junior coder, you can figure out how to design from a good code you are a senior programmer, can get to a comprehensive understand design patterns and)