第四版以Java最新的版本JDK5.0为基础，在第3版的基础上，添加了最新的语言特性，并且对第3版的结构进行了调整，使得所有章节的安排更加遵照循序渐进的特点，同时每一章的内容在分量上也都更加均衡，这使读者能够更加容易地阅读本书并充分了解每章所讲述的内容。-Fourth Edition to the latest version of Java JDK5.0 as the foundation, based on version 3, adds new language features, and the structure of version 3 has been adjusted so that all sections of the arrangement is more gradual in accordance with the characteristics of the same time, the contents of each chapter is also in the weight is more balanced, which makes it easier for readers to read the book and fully understand the contents of each chapter are described.