class Student
{
    String name; int age; public Student(){} public Student(String getname,int getage)
    { name = getname; age = getage;
    } void show()
    {
        System.out.println("我的名字叫"+name+"，今年"+age+"岁！");
    }
} class Undergraduate extends Student
{ private String degree; public Undergraduate(String getname,int getage,String getdegree)
    { name = getname; age = getage; degree = getdegree;
    } void show()
    {
        System.out.println("我的名字叫"+name+"，今年"+age+"岁！来自"+degree+"专业。");
    }
} public class test01
{ public static void main(String [] args)
    {
        Student  stu = new Student("小明",5);
        Undergraduate und = new Undergraduate("小红",6,"通信工程");
        stu.show();
        und.show();
    }
}