In lab4, we have to use the interface, we implement 3 classes.
Uses keyword “implements” to implement.
It is similar with the previous lab, only difference is the implement part and interface.

public class MoveableApp {

	public static void main (String [] args){
		
		Moveable[] dirMoveable = new Moveable[3];
		dirMoveable[0] = new Plane();
		dirMoveable[1] = new Car();
		dirMoveable[2] = new Ship();
		for (Moveable i : dirMoveable) {
			
			i.moveForward();
			i.moveBackward();
			i.stop();
			i.moveLeft();
			i.moveRight();
			System.out.println("--------------------");
			
		}
	}
}
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public interface Moveable {
	public void moveForward();
	public void moveBackward();
	public void stop();
	public void moveLeft();
	public void moveRight();
}
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public class Plane implements Moveable{
	@Override
	public void moveForward(){
	System.out.println("Plane flying forward");
	}
	@Override
	public void moveBackward(){
	System.out.println("Plane taxiing backward");
	}
	@Override
	public void stop(){
	System.out.println("Plane landed");
	}
	@Override
	public void moveLeft(){
	System.out.println("Plane flying Left");
	}
	@Override
	public void moveRight(){
	System.out.println("Plane flying right");
        }
}
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public class Car implements Moveable{
	@Override
	public void moveForward(){
	System.out.println("Car drives forward");
	}
	@Override
	public void moveBackward(){
	System.out.println("Car drives backward");
	}
	@Override
	public void stop(){
	System.out.println("Car parked");
	}
	@Override
	public void moveLeft(){
	System.out.println("Car turns left");
	}
	@Override
	public void moveRight(){
	System.out.println("Car turns right");
        }
}
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public class Ship implements Moveable{
	@Override
	public void moveForward(){
	System.out.println("Ship navigates forward");
	}
	@Override
	public void moveBackward(){
	System.out.println("Ship navigates backward");
	}
	@Override
	public void stop(){
	System.out.println("Ship docked");
	}
	@Override
	public void moveLeft(){
	System.out.println("Ship navigates left");
	}
	@Override
	public void moveRight(){
	System.out.println("Ship navigates right");
        }
}
====================================================================
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