42_Polymorphism

// Polymorphism = greek word for poly-"many", morph-"form" 
// The ability of an object to identify as more than one type

<Main.java>
public class Main{
    public static void main(String[] args) {
        Car car = new Car();
        Bicycle bicycle = new Bicycle();
        Boat boat = new Boat();

        Vehicle[] racers ={car, bicycle, boat}; //All class extends to vehicle

        //Method 1
        /*car.go();
        bicycle.go();
        boat.go();*/

        //Method 2

        for (Vehicle x : racers){
            x.go();
         }
    }
}

<Vehicle.java>
public class Vehicle {
    public void go(){
        System.out.println("*The bicycle begins moving*");
    }
}

<Car.java>
public class Car extends Vehicle{
    @Override
    public void go(){
        System.out.println("*The car begins moving*");
    }
}

<Bicycle.java>
public class Bicycle extends Vehicle{
    @Override
    public void go() {
        System.out.println("*The bicycle begins moving*");
    }
}

<Boat.java>
public class Boat extends Vehicle {
    @Override
    public void go() {
        System.out.println("*The boat begins moving*");
    }
}

>>
*The car begins moving*
*The bicycle begins moving*
*The boat begins moving*