I run through each Apartment in the list with a for loop, calling the appropriate object method for each case. I think it works as asked, but it doesn´t verify.
package com.codegym.task.task14.task1415;
import java.util.ArrayList;
import java.util.List;
/*
Janitorial services
*/
public class Solution {
public static void main(String[] args) {
List<Apartment> apartments = new ArrayList<>();
apartments.add(new OneRoomApt());
apartments.add(new TwoRoomApt());
apartments.add(new ThreeRoomApt());
cleanAllApartments(apartments);
}
public static void cleanAllApartments(List<Apartment> apartments) {
for (Apartment a : apartments) {
switch (a.getClass().getSimpleName()) {
case "OneRoomApt":
((OneRoomApt)a).clean1Room();
break;
case "TwoRoomApt":
((TwoRoomApt)a).clean2Rooms();
break;
case "ThreeRoomApt":
((ThreeRoomApt)a).clean3Rooms();
}
}
}
static interface Apartment {
}
static class OneRoomApt implements Apartment {
void clean1Room() {
System.out.println("1 room has been cleaned");
}
}
static class TwoRoomApt implements Apartment {
void clean2Rooms() {
System.out.println("2 rooms have been cleaned");
}
}
static class ThreeRoomApt implements Apartment {
void clean3Rooms() {
System.out.println("3 rooms have been cleaned");
}
}
}