[Java] Vehicle 다형성 예시

//Vehicle.java
class Vehicle {
	public void run() {
		System.out.println("차량이 달립니다.");
	}
}

//Bus.java
class Bus extends Vehicle {
	@Override
	public void run() {
		System.out.println("버스가 달립니다.");
	}
}

//Taxi.java
class Taxi extends Vehicle {
	@Override
	public void run() {
		System.out.println("택시가 달립니다.");
	}
}

//Driver.java
class Driver{
	public void drive(Vehicle vehicle) {
		vehicle.run();
	}
}

//DriverTest.java
public class DriverTest {
	public static void main(String[] args) {
		Driver driver = new Driver();
  
		driver.drive(new Bus());	// 버스가 달립니다.
		driver.drive(new Taxi());	// 택시가 달립니다.
  
	}
}