static void Main(string[] args)
{
AbstractBook c1 = BookFactory.GetBook("Book1");
AbstractBook c2 = BookFactory.GetBook("Book5");
AbstractBook c3 = BookFactory.GetBook("Book2");
AbstractBook c4 = BookFactory.GetBook("Book3");
AbstractBook c5 = BookFactory.GetBook("Book9");
Console.WriteLine(c1.GetTitle());
Console.WriteLine(c2.GetTitle());
Console.WriteLine(c3.GetTitle());
Console.WriteLine(c4.GetTitle());
Console.WriteLine(c5.GetTitle());
}
private static void Main(string[] args)
{
AbstractBook c1 = BookFactory.GetBook("Book1");
AbstractBook c2 = BookFactory.GetBook("Book5");
AbstractBook c3 = BookFactory.GetBook("Book2");
AbstractBook c4 = BookFactory.GetBook("Book3");
AbstractBook c5 = BookFactory.GetBook("Book9");
/* Without a null object, you would need a null check in here, before you trieds using one of those books.
* if(c2 != null){ c2.GetTitle(); }
*/
Console.WriteLine(c1.GetTitle());
Console.WriteLine(c2.GetTitle());
Console.WriteLine(c3.GetTitle());
Console.WriteLine(c4.GetTitle());
Console.WriteLine(c5.GetTitle());
Console.ReadLine();
}
