代码~

一个Java写的聊天应用程序，它可以处理多个用户在同一时间。它还支持文件传输。 (A chat application written in Java, it can handle multiple users at the same time. It also supports file transfer.)

主要用户有：教师，教务员，学生和管理员。学生接收通知和查看成绩，教师上传和下载文件，教务员负责生成重修名单和考试安排，管理员负责管理用户角色和相关设置。(The main users are teachers, administrators, students and administrators. Students receive notifications and results, teachers upload and download files. The dean is responsible for generating reover lists and examination arrangements, and administrators are responsible for managing user roles and related settings.)

基于cxf实现的java服务器端webservice，包含一个sayHello方法，供入门者参考(Java server-side Web service based on CXF includes a sayHello method for beginners to refer to)

北大青鸟使用MVC开发租房系统Struts + servlet +jsp(Beida Jade Bird rent system developed using the MVC Struts+ servlet+ jsp)

springBoot and rocketmq 集成开发(springBoot and rocketmq development)

utility class for converting jce/jca DH objects objects into their org.bouncycastle.crypto counterparts.

说明：  springboot 的启动类，关于gateway的启动，。。。。。。。。。。。。。。。。。。。。。(springBootCoreApplication)

Tests bounded type parameters declared on methods.

主要完成界面对sql数据库的增加，删除，修改，查询，(The main completion of the interface to the SQL database, delete, modify, query,)

①阅读Java API文档，掌握借助API编程的方法。 ②掌握String类的常用方法 ③掌握Date类以及Calendar类的常用方法； (① read the Java API documentation, to master the method with API programming. ② master the String class to grasp the common method ③ Date and Calendar classes class common method )