/**
 * Main class (driver) for the DogFactory.
 */
public class Main
{

  public Main()
  {
    // create a small dog
    Dog dog = DogFactory.getDog("small");
    dog.speak();

    // create a big dog
    dog = DogFactory.getDog("big");
    dog.speak();

    // create a working dog
    dog = DogFactory.getDog("working");
    dog.speak();

    System.out.println( "abs of -1 = " + Math.abs(-1) );
  }

  public static void main(String[] args)
  {
    new Main();
  }
}