使用java写的一个选课系统，支持学生，教师，教务员和管理员四个角色。数据库使用MYSQL和Hibernate框架搭建-Using java to write in an elective system that supports students, teachers, academic staff and administrators in four roles. The use of MYSQL database, and Hibernate frameworks to build

学生选课系统：学生信息和课程信息的增删改查，连接数据库有界面。-it is simplify a prosess.