package oopcore3_downcasting;

import java.lang.reflect.Array;

import java.util.ArrayList;

class Animal{

public void move() {

System.out.println("동물이 움직입니다.");

}

}

class Human extends Animal{

@Override

public void move() {

System.out.println("사람이 두 발로 걷습니다.");

}

public void readBook() {

System.out.println("사람이 책을 읽습니다.");

}

}

class Tiger extends Animal{

@Override

public void move() {

System.out.println("호랑이가 네 발로 뜁니다.");

}

public void hunting() {

System.out.println("호랑이가 사냥을 합니다.");

}

}

public class AnimalTest {

public static void main(String[] args) {

Animal hAnimal = new Human();

Animal tAnimal = new Tiger();

AnimalTest test = new AnimalTest();

test.moveAnimal(hAnimal);

test.moveAnimal(tAnimal);

ArrayList<Animal> animalList = new ArrayList<>();

animalList.add(hAnimal);

animalList.add(tAnimal);

for(Animal animal : animalList) {

animal.move();

}

test.testDownCasting(animalList);

}

public void testDownCasting(ArrayList<Animal> list) {

for(int i=0; i<list.size(); i++) {

Animal animal = list.get(i);

if(animal instanceof Human) {

Human human = (Human)animal;

human.readBook();

}

else if(animal instanceof Tiger) {

Tiger tiger = (Tiger)animal;

tiger.hunting();

}

}

}

public void moveAnimal(Animal animal) {

animal.move();

}

}