private void enqueueSamples(AnimalShelter shelter) {
shelter
.enqueue(new Dog("Charlie"))
.enqueue(new Dog("Silver"))
.enqueue(new Cat("Muscat Love"))
.enqueue(new Dog("Snoopy"))
.enqueue(new Cat("Persian"));
}
private void dequeueAndPrints(AnimalShelter shelter) {
System.out.println("dequeueAny() - " + shelter.dequeueAny().name);
System.out.println("dequeueCat() - " + shelter.dequeueCat().name);
System.out.println("dequeueDog() - " + shelter.dequeueDog().name);
}