TDD-AnimalFactory-BlueJ/AnimalFactory.java

import java.util.Date;

/**
 * @author leon on 4/19/18.
 * This class is responsible for creating animals and automatically assigning them an id
 */
public class AnimalFactory {
    public static Dog createDog(String name, Date birthDate) {
        Integer newId = DogHouse.getNumberOfDogs();
        return new Dog(name, birthDate, newId);
    }

    public static Cat createCat(String name, Date birthDate) {
        Integer newId = CatHouse.getNumberOfCats();
        return new Cat(name, birthDate, newId);
    }
}