java实现的命令行学生成绩管理系统，采用序列化机制，向并且在关机之后，能够对文件中写入的对象重载，有对成绩按学生学号，姓名排序，按学号，姓名查询.删除的功能。适合初学者参考。-The java implementation command line student performance management system, the serialization mechanism, and shutdown after can write the object file overloading the achievements by the number of students to learn, name Sort by school, name query. delete function. The reference for beginners.