class Student {
    String name;
    int age;
    
    public void Student(String name,int age) {
        this.name = name;
        this.age = age;
    }
    
    public void show () {
        System.out.println("学生姓名："+this.name+" 学生年龄："+this.age);
    }
}

class Undergraduate extends Student {
    String degree;
    
    public void Undergraduate(String name,int age,String degree) {
        super.Student(name,age);
        this.degree = degree;
    }
    
    public void show () {
        System.out.println("学生姓名："+this.name+" 学生年龄："+this.age+" 学生学位："+this.degree);
    }
}

public class StudentDemo {
    public static void main(String[] args) {
        Student s = new Student();
        s.Student("小红",24);
        s.show();
        
        Undergraduate u = new Undergraduate();
        u.Undergraduate("小红",24,"硕士");
        u.show();
    }
}