Exam2

drop file java(drop file java------------------------ )

说明：  shiro基础资料，包含简单的基本内容，供大家学习使用(shiro learning data for boay)

实现传输层UDP的功能，进行文件的发送等功能的实现(UDP transport layer, file send and other functions to achieve)

drawplot_demo 代码，可能有点乱(drawplot_demo code, may be a bit messy)

说明：  通过http在互联网上下载一个图片,并显示(Through http on the Internet to download a picture, and display)

说明：  吃货系统。点菜查看菜单，结账，点赞评论等各种功能(Eating system. Ordering menu, checkout, comment and other functions)

说明：  Struts2是一个基于MVC设计模式的Web应用框架，它本质上相当于一个servlet，在MVC设计模式中，Struts2作为控制器(Controller)来建立模型与视图的数据交互。(A standard and universal tag library for Java Web developers, Struts2, is a web application framework based on MVC design pattern, which is essentially equivalent to a servlet. In MVC design pattern, Struts2 is used as a controller to establish data interaction between model and view.)

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初学者的core java基础笔记，内部资料(Beginner' s core java foundation notes, internal data)

信息论中的信息 ppt课件 自信息量 信息增益 熵 内容不错 推荐(Since the amount of information entropy information gain)