MPFS21 - Java

给学JAVA的一些提示和警告，帮助学习和使用java，新手必读( )

大学物理创新平台，以C++和JAVA为基础开发的平台(University Physics innovative platform for C and Java-based development platform)

ipdatabase 二叉树快速搜索IP地址数据库 数据 数据源采用2015年广告协会制定的IP地址标准数据库，中国互联网广告行业统一采用的标准IP库。 原理 利用二叉树实现IP查询，首先将10进制IPV4地址转化为二进制构建二叉树，利用二叉树搜索进行搜索，查询时间复杂度log2n，比传统IP库n的查询速度高出一个量级。(Ipdatabase Binary Tree Fast Search IP Address Database data The data source is the standard IP address database formulated by the Advertising Association in 2015, and the standard IP database adopted by the Internet advertising industry in China. principle The binary tree is used to realize IP query. Firstly, the 10-bit IPV4 address is converted into binary to construct a binary tree, and the binary tree search is used to search. The query time complexity log2n is one order of magnitude higher than that of traditional IP library n.)

实现类似资源浏览器的树形目录, 作了一些功能添加()

说明：  这是一个酒店管理系统，java编写的，里面有源码和分析需求，供大家参考！(This is a hotel management system, java prepared, there are source and analysis of needs, for your reference!)

tomexam，一个简单易用的在线考试系统。tomcat、java、mysql.(tomexam, a simple-to-use online examination system. tomcat, java, mysql.)

spingsecurity的demo，初学者可根据注释和代码进行学习(Spingsecurity demo, beginners can learn from comments and code)

Java中String.format的用法(String.format usage in Java)

Junitperf实际是基于junit的包装，通过编写用于junitperf的单元测试，我们也可使测试过程自动化。(Junitperf actually junit-based packaging, through the preparation for the junitperf unit testing, we also can automate the testing process.)

網路遊戲天堂1的JAVA模擬環境，以l1j-99nes為基礎開發，修正許多漏洞以及新增一些人性化功能，功能相當((Online game Paradise JAVA simulation environment 1 to l1j-99nes-based development, correcting many loopholes and add some user-friendly features, quite powerful))