Java是一种可以撰写跨平台应用软件的面向对象的程序设计语言，是由Sun Microsystems公司于1995年5月推出的Java程序设计语言和Java平台（即JavaSE, JavaEE, JavaME）的总称。Java 技术具有卓越的通用性、高效性、平台移植性和安全性，广泛应用于个人PC、数据中心、游戏控制台、科学超级计算机、移动电话和互联网，同时拥有全球最大的开发者专业社群。在全球云计算和移动互联网的产业环境下，Java更具备了显著优势和广阔前景。-Java is a cross-platform application software can write object-oriented programming language, by Sun Microsystems, Inc. in May 1995 launch of the Java programming language and the Java platform (ie JavaSE, JavaEE, JavaME) in general. Java technology has excellent versatility, efficiency, platform portability, and security, are widely used in personal PC, data center, gaming consoles, scientific supercomputers, cell phones and the Internet, also has the world s largest developer of professional communities . In the global cloud computing and mobile Internet industry environment, Java and more have significant advantages and broad prospects.