static void Main(string[] args)
{
Duck myduck = new MallardDuck();
myduck.display();
myduck.performFly();
myduck.performQuack();
myduck = new RedHeadDuck();
myduck.display();
myduck.performFly();
myduck.performQuack();
myduck = new RubberDuck();
myduck.display();
myduck.performFly();
myduck.performQuack();
myduck = new DecoyDuck();
myduck.display();
myduck.performFly();
myduck.performQuack();
myduck.setFlyBehavior(new FlyJet());
myduck.performFly();
}
static void Main(string[] args)
{
//try
//{
RedHeadDuck redHead = new RedHeadDuck();
redHead.display();
redHead.setFlyBehavior(new FlyWithRockets());// Learned from experience. This line takes care of error "Additional information: Object reference not set to an instance of an object." for performFly().
redHead.performFly();
Console.ReadLine();
//}
/*catch (NullReferenceException nre)
{
Console.WriteLine(
"\nCan't call BarMethod(), foo is null.\n" +
nre.Message);
}*/
}
static void Main(string[] args)
{
//try
//{
RedHeadDuck redHead = new RedHeadDuck();
redHead.display();
redHead.setFlyBehavior(new FlyWithRockets()); // Learned from experience. This line takes care of error "Additional information: Object reference not set to an instance of an object." for performFly().
redHead.performFly();
Console.ReadLine();
//}
/*catch (NullReferenceException nre)
* {
* Console.WriteLine(
* "\nCan't call BarMethod(), foo is null.\n" +
* nre.Message);
* }*/
}