这是一个用java编写的学生管理系统，连接了sql server 2008数据库，可以实现增删改查-This is a java prepared by the student management system, connecting the sql server 2008 database, you can achieve CRUD

读取学生成绩，成绩为txt文件，用逗号隔开的，并可以对学生成绩做增删改查等数据库操作-Read the student performance, the results for the txt file, separated by a comma, and students can do the addition and deletion of operations such as