1、编写Student类，类体定义：

班级(banji)和姓名(sname)成员，私有的,字符类型；

构造函数；

取值函数，使得子类可以访问私有成员；

重定义Object父类的toString()方法，可以以“班级,姓名”的形式输出对象，并进行拼写检查

再编写一个RPG类，类体中包含 main方法，编写代码以测试Student类体的编写。

-1, the preparation of the Student class, the class body definition:

Class (banji) and name (sname) members, private and character types

Constructor

The value function so subclasses can access private members

Redefine the parent class Object toString () method, can be　class, the name　form output object, and spell checking

Then write an RPG class, the class body contains the main method, write code to test the Student class body of writing.