JAVA课程设计，学习管理系统。老师和学生的分别登陆，及老师的管理权限。学生功能：选课，修改个人信息，查询成绩。老师功能：对学生所有信息的增、删、改、查。-JAVA course design, learning management system. Teachers and students were landed, and the teacher s administrative privileges. Student Function: elective, modify personal