Person siti = new Person("Siti", "Bandung");
showPerson(siti);
showPerson(new Person("Doni", "Semarang"));
Student sahrul = new Student();
sahrul.setName("Sahrul");
sahrul.setAlamat("Yogyakarta");
sahrul.setNoInduk("001");
sahrul.setSekolah("SMA YOGYAKARTA");
showStudent(sahrul);
Person juwita = new Student();
juwita.setName("Juwita");
juwita.setAlamat("Yogyakarta");
showPerson(juwita);
showStudent((Student) juwita);
Student studentJuwita = (Student) juwita;
studentJuwita.setNoInduk("002");
studentJuwita.setSekolah("SMA YOGYAKARTA");
showStudent(studentJuwita);
}