com.javarush.task.task14.task1415

Solution.java

/* 
Клининговый центр
*/
public class Solution {
    public static void main(String[] args) {
        List<Apartment> apartments = new ArrayList<Apartment>();
        apartments.add(new Apt1Room());
        apartments.add(new Apt2Room());
        apartments.add(new Apt3Room());
        cleanAllApartments(apartments);
    }
    public static void cleanAllApartments(List<Apartment> apartments) {
        //написать тут вашу реализацию пунктов 1-4
    for(Apartment a:apartments)
        {
            if(a instanceof Apt1Room)
                ((Apt1Room) a).clean1Room();
            if(a instanceof Apt2Room)
                ((Apt2Room) a).clean2Rooms();
            if(a instanceof Apt3Room)
                ((Apt3Room) a).clean3Rooms();
        }
    }
    static interface Apartment {
    }
    static class Apt1Room implements Apartment {
        void clean1Room() {
            System.out.println("1 room is cleaned");
        }
    }
    static class Apt2Room implements Apartment {
        void clean2Rooms() {
            System.out.println("2 rooms are cleaned");
        }
    }
    static class Apt3Room implements Apartment {
        void clean3Rooms() {
            System.out.println("3 rooms are cleaned");
        }
    }
}