设计一个person类，包含姓名、出生年份两个属性以及setBirthYear、getAge方法（该方法使用2012减出生年份得到年龄）。注：setBirthYear(int year)里，需要检查传入的参数year的合法性。我们可定义year在1900到2012之间为合法。

姓名属性和setBirthYear、getAge方法设置为public，出生年份属性设置为private。

编写main函数，创建person类的对象，设置其姓名和出生年份，输出姓名、年龄。-Design a person class that contains the name, birth Year two properties as well as setBirthYear getAge method (which uses a birth year of 2012 minus age). Note: setBirthYear (int year), you need to check the legitimacy of the incoming parameters year. We define the year between 1900-2012 as legitimate. The name attribute setBirthYear, getAge method is set to public, the birth year property is set to private. Write the main function is to create the person classes of objects, set its name and year of birth, output name, age.