package src.ex4;

public class TestAnimal {

public static void main(String[] args)

{

// Using the subclasses

Cat cat1 = new Cat();

cat1.greeting();

Dog dog1 = new Dog();

dog1.greeting();

BigDog bigDog1 = new BigDog();

bigDog1.greeting();

// Using Polymorphism

Animal animal1 = new Cat();

animal1.greeting();

Animal animal2 = new Dog();

animal2.greeting();

Animal animal3 = new BigDog();

animal3.greeting();

// Animal animal4 = new Animal(); // Error!!! Animal is abstract; cannot be instantiated !

// Downcast

Dog dog2 = (Dog)animal2;

BigDog bigDog2 = (BigDog)animal3;

Dog dog3 = (Dog)animal3;

// Cat cat2 = (Cat)animal2; // Error!!! Dog cannot be cast to Cat !

dog2.greeting(dog3);

dog3.greeting(dog2);

dog2.greeting(bigDog2);

bigDog2.greeting(dog2);

bigDog2.greeting(bigDog1);

bigDog1.greeting(bigDog2);

}

}