VideoViewActivity

说明：  springcloud基本功能，一些简单的查询操作，删除操作，插入操作，定时任务配置(Spring cloud basic functions, some simple query operations, delete operations, insert operations, timing task configuration)

java 计算器应用程序,适合新手对java se的入门开发学习。是个不错的demo(Java calculator application, suitable for entry to develop java se novice learning. Is a good demo )

java连接mongodb，oracle，sqlserver2008的连接(java connect mongodb, oracle, sqlserver2008 connection)

Java MySQL import and export data Java MySQL import and export data

精通java网络编程第二版的全部的源代码(Proficient in the second version of the java network programming source code)

说明：  自己系统开发，用与学习和后面项目的开发，主要集成springboot(Develop your own system, use and learn, and develop later projects, mainly inherit spring boot)

GPS定位，在android4.4下编译通过，可供参考学习(GPS positioning, android4.4 compiler, available for reference study)

Simple proxy server for wfs services. Place the file to the cgi folder in your java web server. Change allowed hosts,ports, and username,password.

使用java实现的RFC1945 http1.0协议。所有面向对象设计严谨按照RFC 1945协议中的描述。源代码逾4000行。提供给Java网络编程初学者学习(Java achieved using RFC1945 http1.0 agreement. All well-structured object-oriented protocol in RFC 1945 in accordance with the description. The source code of more than 4000 lines. Java network programming to beginners learning)

检测用户是否存在，借书还书功能，新书推荐，书籍查找等多项功能，页面优化级别A(this is a good Library System plase know from Chinese detail)