SpecialEmployee emp = new SpecialEmpoyee();

interface IBird
    {
        public void fly();
        public void makeSound();
    }

class Sparrow : IBird
{
        public void fly()
        {
          // Print "Fly"
        }
        public void makeSound()
        {
          // Print "Sound"
        }
}

interface ToyDuck
{
    // toyducks dont fly they just make
    // squeaking sound
    public void squeak();
}

class PlasticToyDuck implements ToyDuck
{
    public void squeak()
    {
        //Print "Squeak"
    }
}

class BirdAdapter implements ToyDuck
{
    // You need to implement the interface your
    // client expects to use.
    // Instead of using implementation we are programming against interface
    // here, by using IBird instead of "new Sparrow" or something like it.
    // Further, it is an example of constructor dependency injection where we are inserting dependency "IBird" through constructor.
    IBird bird;
    public BirdAdapter(IBird bird)
    {
        // we need reference to the object we
        // are adapting
        this.bird = bird;
    }

    public void squeak()
    {
        // translate the methods appropriately
        bird.makeSound();
    }
}