// reflection/PetCounter.java

// (c)2021 MindView LLC: see Copyright.txt

// We make no guarantees that this code is fit for any purpose.

// Visit http://OnJava8.com for more book information.

// Using instanceof

import reflection.pets.*;

import java.util.*;

public class PetCounter {

static class Counter extends HashMap<String,Integer> {

public void count(String type) {

Integer quantity = get(type);

if(quantity == null)

put(type, 1);

else

put(type, quantity + 1);

}

}

private Counter counter = new Counter();

private void countPet(Pet pet) {

System.out.print(

pet.getClass().getSimpleName() + " ");

if(pet instanceof Pet)

counter.count("Pet");

if(pet instanceof Dog)

counter.count("Dog");

if(pet instanceof Mutt)

counter.count("Mutt");

if(pet instanceof Pug)

counter.count("Pug");

if(pet instanceof Cat)

counter.count("Cat");

if(pet instanceof EgyptianMau)

counter.count("EgyptianMau");

if(pet instanceof Manx)

counter.count("Manx");

if(pet instanceof Cymric)

counter.count("Cymric");

if(pet instanceof Rodent)

counter.count("Rodent");

if(pet instanceof Rat)

counter.count("Rat");

if(pet instanceof Mouse)

counter.count("Mouse");

if(pet instanceof Hamster)

counter.count("Hamster");

}

public void count(Creator creator) {

creator.stream().limit(20)

.forEach(pet -> countPet(pet));

System.out.println();

System.out.println(counter);

}

public static void main(String[] args) {

new PetCounter().count(new ForNamePetCreator());

}

}

/* Output:

Rat Manx Cymric Mutt Pug Cymric Pug Manx Cymric Rat

EgyptianMau Hamster EgyptianMau Mutt Mutt Cymric Mouse

Pug Mouse Cymric

{EgyptianMau=2, Pug=3, Rat=2, Cymric=5, Mouse=2, Cat=9,

Manx=7, Rodent=5, Mutt=3, Dog=6, Pet=20, Hamster=1}

*/