Casting In Java

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public class JavaCastingExample {

	public static void main(String[] args) {

		class Animal {
			public String printName() {
				return "Animal";
			}
		}

		class Dog extends Animal {
			public String printName() {
				return "Dog";
			}
		}

		Animal animal = new Animal();
		Dog dog = new Dog();
		Animal unknown = (Animal) dog;

		System.out.println("animal: " + animal.printName());
		System.out.println("dog: " + dog.printName());
		System.out.println("unknown: " + unknown.printName());
	}
}
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