rev2021

cascade密钥协商的程序，希望对大家有所帮助吧(this is a programme of cascade key Java)

java生成的一一维码图片，该程序可以在eclipse直接运行(Java generated one one dimensional picture code, the program can be run in eclipse directly)

Implementation of {@link UiElementTreeEditPart} for the document.

矢量数据绘图系统，比较简单的java程序，如果有雷同，纯属巧合。(Vector data mapping system, relatively simple java program, if there is similarity is purely coincidental.)

Sword refers to the Java implementation, a total of 65 to the topic, you can view the topic in the cattle network

java 实现 微信公众平台开发 服务器与微信公众平台连接( java achieve micro-channel public platform)

设计模式一（单子、工厂、策略模式）练习 1． 假设现在要设计一个贩卖各类书籍的电子商务网站的购物车系统。对所有的教材类图书 实行每本一元的折扣；对连环画类图书提供每本7%的促销折扣；而对非教材类的计算机图书有3%的折扣；对其余书没有折扣。使用策略模式、工厂模式、单子模式进行设计(Design Mode 1 (List, Factory, Strategy Mode) Exercise 1. Suppose we are going to design a shopping cart system for e-commerce websites that sell all kinds of books. All textbook books are discounted at one yuan per book; comic books are discounted at 7% per book; computer books are discounted at 3% for non-textbook books; and other books are discounted at no rate. Design using strategy mode, factory mode and single mode)

Test add double extends Dx Test Case Source Code for Andriod.

spring 的Quartz定时器的功能非常强大，可以在特定的年月日小时分秒的时间点触发时间，完成事件的调度(spring of Quartz timer function is very powerful, can trigger a specific point in time time date hours minutes and seconds to complete the schedule of events)

客户端的聊天内容通过json格式封装(包含聊天内容、发送人信息)之后，HTTP请求百度服务器，即请求把该消息发送到指定id的用户，请求成功之后，百度服务器就把我们的信息转发给指定的用户，对应用户再解析json格式的信息，就可以知道该消息来自何处，以及消息内容。(Chat client via json format package (includes chat, sender information), after, HTTP requests Baidu server, which sends the message to the requesting user specified id, after the request is successful, Baidu server took our information forwarded to the designated users, the corresponding user information and then parse json format, you can know that the message came from, and message content.)