本书的主要目标是为你提供有关Java应用和Java applets的面向对象的程序设计所必需的知识和技能；并讲授Java编程语言句法和面向对象的概念，以及Java运行环境的许多特性， 对图形用户界面（GUIs）、多线程和网络的支持等。本课程包括了参加SUN Certified Java Programmer和SUN Certified Java Developer考试所必备的知识。-The main objective of this book is to provide you with Java applications and Java applets on object-oriented programming the necessary knowledge and skills　and teaches Java programming language syntax and object-oriented concepts, as well as many of the features of the Java Runtime Environment , for graphical user interfaces (GUIs), multi-threaded and network support. This course includes attending the SUN Certified Java Programmer and the SUN Certified Java Developer exam necessary for knowledge.