Lab Description:
In Lab 4, we are learning how to use interface and how to implement it, and then create a program that will polymorphically process an array to display the result of the interface implementation.
Code:
Movable.java
public interface Movable { public void moveForward(); public void moveBackward(); public void stop(); public void moveLeft(); public void moveRight(); }
Car.java
//Create By Kawa Tsang package Lab4; public class Car implements Movable{ @Override public void moveForward() { // TODO Auto-generated method stub System.out.println("Car drives forward"); } @Override public void moveBackward() { // TODO Auto-generated method stub System.out.println("Car drives backward"); } @Override public void stop() { // TODO Auto-generated method stub System.out.println("Car parked"); } @Override public void moveLeft() { // TODO Auto-generated method stub System.out.println("Car turns left"); } @Override public void moveRight() { // TODO Auto-generated method stub System.out.println("Car turns right"); } }
Plane.java
//Create By Kawa Tsang package Lab4; public class Plane implements Movable{ @Override public void moveForward() { // TODO Auto-generated method stub System.out.println("Plane flying forward"); } @Override public void moveBackward() { // TODO Auto-generated method stub System.out.println("Plane taxiing backward"); } @Override public void stop() { // TODO Auto-generated method stub System.out.println("Plane landed"); } @Override public void moveLeft() { // TODO Auto-generated method stub System.out.println("Plane flying left"); } @Override public void moveRight() { // TODO Auto-generated method stub System.out.println("Plane flying right"); } }
Ship.java
//Create By Kawa Tsang package Lab4; public class Ship implements Movable{ @Override public void moveForward() { // TODO Auto-generated method stub System.out.println("Ship navigates forward"); } @Override public void moveBackward() { // TODO Auto-generated method stub System.out.println("Ship navigates backward"); } @Override public void stop() { // TODO Auto-generated method stub System.out.println("Ship docked"); } @Override public void moveLeft() { // TODO Auto-generated method stub System.out.println("Ship navigates left"); } @Override public void moveRight() { // TODO Auto-generated method stub System.out.println("Ship navigates right"); } }
Clients.java
//Create By Kawa Tsang package Lab4; public class Clients { public static void main(String[] args) { // TODO Auto-generated method stub Movable[] movableObject = new Movable[3]; movableObject[0] = new Plane(); movableObject[1] = new Car(); movableObject[2] = new Ship(); for(Movable newMovable: movableObject){ newMovable.moveForward(); newMovable.moveBackward(); newMovable.stop(); newMovable.moveLeft(); newMovable.moveRight(); System.out.println("---------------------"); } } }
Screenshot: