本书是学习java程序的参考书，主要分为java语言，java库，java软件开发技术和应用java四部分，对初学者有不小帮助，共计750页。-This book is a reference book to learn java program is mainly divided into java language, java library, java software development and application of java are four parts to the beginners there are no small help, a total of 750.