Factorymethod factory method

Convenient product dimension extension .

（1）CarFactory 

public class CarFactory {
    public Moveable create() {
        System.out.println("a car created!");
        return new Car();
    }
}

（2）BroomFactory

public class BroomFactory {
    public Moveable create() {
        System.out.println("a Broom created!");
        return new Broom();
    }
}

（3）Moveable

public interface Moveable {
    void go();
}

（4）Car

public class Car implements  Moveable {
    @Override
    public void go() {
        System.out.println("Car go ....");
    }
}

（5）Broom

public class Broom implements Moveable{
    @Override
    public void go() {
        System.out.println("broom flying .....");
    }
}

（6）Main

public class Main {
    public static void main(String[] args) {
        //Moveable m = new CarFactory().create();
        //m.go();
        Moveable m = new BroomFactory().create();
        m.go();
    }
}