Lab Description:

In this lab I used the public interface which was given to design a program that is implemented by Plane, Car and Ship.

Code:

public interface Movable {
	public void moveForward();
	public void moveBackward();
	public void stop();
	public void moveLeft();
	public void moveRight();
}

class Plane implements Movable {
	public void moveForward() {
		System.out.println("Plane flying forward");}
	public void moveBackward() {
		System.out.println("Plane taxing backward");}
	public void stop() {
		System.out.println("Plane landed");}
	public void moveLeft() {
		System.out.println("Plane flying left");}
	public void moveRight() {
		System.out.println("Plane flying right");}
}

class Car implements Movable {
	public void moveForward() {
		System.out.println("Car drives forward");}
	public void moveBackward() {
		System.out.println("Car drives backward");}
	public void stop() {
		System.out.println("Car parked");}
	public void moveLeft() {
		System.out.println("Car drives left");}
	public void moveRight() {
		System.out.println("Car drives right");}
}

class Ship implements Movable {
	public void moveForward() {
		System.out.println("Ship navigates forward");}
	public void moveBackward() {
		System.out.println("Ship navigates backward");}
	public void stop() {
		System.out.println("Ship docked");}
	public void moveLeft() {
		System.out.println("Ship navigates left");}
	public void moveRight() {
		System.out.println("Ship navigates right");}
}

public class Lab6{
	public static void main(String[] args) {
		Movable[] myMovable = new Movable[3];
		myMovable[0] = new Plane();
		myMovable[1] = new Car();
		myMovable[2] = new Ship();

		for (Movable a: myMovable){
			a.moveForward();
			a.moveBackward();
			a.stop();
			a.moveLeft();
			a.moveRight();
			System.out.println("--------------------- ");
		}
	}
}

Screenshot: