Lab 6

Lab Description:

Similar to the lab about inheritance, interfaces are used instead in this lab. Plane, car and ship are all implemented from the interface Movable. An array of size 3 for the interface Movable is then used in the application part.

Source code:

package lab6;

public interface Movable {

	public void moveForward();

	public void moveBackward();

	public void stop();

	public void moveLeft();

	public void moveRight();

}

****************************************************************

package lab6;


public  class Plane implements Movable {


	@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");

	}

}

**********************************************************************

package lab6;


public  class Car implements Movable {


	@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 drives left");

	}


	@Override

	public void moveRight() {

		System.out.println("Car drives right");

	}

}

******************************************************************

package lab6;


public  class Ship implements Movable {


	@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");

	}

}

**********************************************************************

package lab6;


public class MovableStep {

	/**

	 * @param args

	 */

	public static void main(String[] args) {

		// TODO Auto-generated method stub

		Movable[] myMovables = new Movable[3];

		myMovables[0] = new Plane();

		myMovables[1] = new Car();

		myMovables[2] = new Ship();


		for (Movable v: myMovables){

			v.moveForward();

			v.moveBackward();

			v.stop();

			v.moveLeft();

			v.moveRight();

			System.out.println("------------------");

		}

	}

}


Screenshots: