calculator

说明：  热血江湖 GM 工具，方便GM更好的操作游戏(Yulgang GM tool to facilitate better operation of the game GM)

一个简单的聊天室，用java做的，功能不是很全，但基本功能还是有的(A simple chat room, to do with java, feature is not very wide, but the basic function or some)

AdditionService add_args add_argsStandardScheme

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)

java 学习记下来的学习笔记，仅供入门！(java study notes down for learning purposes only entry!)

说明：  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.)

说明：  java docuument for libraay

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.)

运用多线程及java网络编程技术完成的一个j2se小程序。(The use of multi-threaded and Java network programming technology to complete a J2SE applet.)

画逻辑电路图基本功能： 1。文件的保存，打开； 2。添加基本元件； 3。画点，画线； 4。删除元件(Painting the basic functions of the logic circuit diagram: 1. Documents, open 2. Add the basic components 3. Painting point, drawing a line 4. Delete components)