// equalshashcode/IndividualTest.java
// (c)2017 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.
import collections.MapOfList;
import typeinfo.pets.*;
import java.util.*;

public class IndividualTest {
 public static void main(String[] args) {
 Set<Individual> pets = new TreeSet<>();
 for(List<? extends Pet> lp :
 MapOfList.petPeople.values())
 for(Pet p : lp)
 pets.add(p);
 pets.forEach(System.out::println);
 }
}
/* Output:
Cat Elsie May
Cat Pinkola
Cat Shackleton
Cat Stanford
Cymric Molly
Dog Margrett
Mutt Spot
Pug Louie aka Louis Snorkelstein Dupree
Rat Fizzy
Rat Freckly
Rat Fuzzy
*/