1 声明Student类，该类实现Serializable接口以表明该类可以进行序列化。该类有姓名、学号（long），math、os、java用来存放对应的成绩，在构造方法中进行姓名、学号、课程成绩的赋值。Override由Object继承来的toString方法以便以友好格式显示自己的属性，格式为：张三 12 os:90 java:90 math: 90
2 建立一个类，利用数据库来存储多个Student，写完一个方法在main中写一段测试代码，运行以保证目前所做工作的正确性。有以下方法：增删学生信息，显示信息，(1 declare the Student class, which implements the Serializable interface to indicate that the class can be serialized. The class has the name, student number (long), math, OS, Java, used to store the corresponding results, in the construction methods for the name, number of students, curriculum evaluation of the assignment. Override inherits the toString method from Object to display its own attributes in a friendly format: three, 12, os:90, java:90, math:

2, build a class, use the database to store multiple Student, write a method, write a test code in main, run to ensure the correctness of the work done. There are the following ways: add and delete student information, display information,)