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连连看简单javafx代码，适合javafx的初学者 (Of Lianliankan simple javafx code, suitable for javafx for beginners)

3.设计一个能够描述点（point）、线(line)、圆（circle）、矩形（rectangle）和三角形（triangle）等几何形状的类体系，能够计算不同形状的周长和面积（如果能够定义的话）。程序文件命名为Exe3_3.java。(3. Design a point can be described (point), line (line), circle (circle), class hierarchy rectangle (rectangle) and the triangle (triangle) and other geometric shapes, different shapes can calculate perimeter and area (if you can define if). Program file named Exe3_3.java.)

rtp packet source code

这是一个用java编写的一个界面，此界面与数据库相连，通过对界面中的数据操作继而对数据库进行操作。(This is a java written in an interface, this interface is connected to the database, through the interface data manipulation and then to operate the database.)

springmvc security 权限管理例子(springmvc security )

实现对象的序列化与反序列化，定义一个student对象，实现对对象的添加、删除、修改、退出等的操作。(To achieve the object serialization and deserialization, define a student objects to realize the object to add, delete, modify, withdraw from such operations.)

安卓工程源码，自行车导航源码，GpsTracker源码，百度地图API-定位周边搜索POI源码，百度地图API源码，北京公交线路查询（离线），获取Gps信息的程序源码。(Android project source code, bike navigation source, GpsTracker source, Baidu map API- positioned around the search for POI source, Baidu Maps API source, Beijing bus lines query (offline), to obtain information on Open Source Gps)

说明：  国密算法的实现与一些测试类，直接使用jar包就可以,转载自csdn(SM2 SM4 SM3 description)

说明：  遇到跨域问题把此java文件加进config类里(Add this java file to the Config class when encountering cross-domain problems)

说明：  Excel的导出,主要针对项目中使用到poi的说明........................(Export of Excel, mainly for the description of POI used in projects)