以员工为父类，经理、普工均继承该类，创建经理类和普工类，输出经理和普工的工资。在父类编写getSalary()方法，并在子类中重写，实现多态。（工资包括基本工资与津贴，其中：基本工资：2000+工龄*10，父类定义；津贴与具体岗位有关）-Employees in the parent class, general manager, inherit the class, create a class and general manager, manager of the output and the wages of ordinary workers. GetSalary () method is written in the parent class, and the sub class is rewritten to achieve polymorphism. (salary includes basic salary and allowance, among them: basic salary: 2000+ length of service*10, father kind definition　allowance is related to the specific position.