Description:
In this lab we basically, implemented Movable interface to car, plane, ship classes. We basically overloaded constructors from car, plane, ship classes with two coordinates X and Y, declared fields, and invoked abstract methods from Movable interface to our classes. In movable app, we basically used our classes to create object and used those object to invoke the methods, to let the user enter the value for methods and get the output as coordinates.
code:
movable app
package Lab4;
import java.util.Scanner;
public class MovableApp {
public static void main(String [] args){
int n =0, numIn = 0, enter = 0, entVal = 0 ;
Scanner input = new Scanner(System.in);//inputs
System.out.println("Do you want to Exit? \n press 1 to enter\n press anyother number to exit");
entVal = input.nextInt();
if (entVal==1){
//creating objects
Car carObj = new Car();
Ship ShipObj = new Ship();
Plane Planeobj = new Plane();
System.out.println("which vehicle would you like to choose?");
System.out.println("enter 1 for Car \n enter 2 for plane \n enter 3 for ship \n enter 4 to exit ");
numIn = input.nextInt();//input to enter program
switch (numIn){
case 1:
do{
System.out.println("you have chosen to play with car");
System.out.println("what value would you like to enter for moveForward");
n = input.nextInt();
carObj.moveForward(n);
carObj.displayCoordinates(); //displays coordinates
System.out.println("what value would you like to enter for moveBackward");
n = input.nextInt();
carObj.moveBackward(n);
carObj.displayCoordinates();
System.out.println("what value would you like to enter for moveLeft");
n = input.nextInt();
carObj.moveLeft(n);
carObj.displayCoordinates();
System.out.println("what value would you like to enter for moveRight");
n = input.nextInt();
carObj.moveRight(n);
carObj.displayCoordinates();
System.out.println("Would you like to move forward?");
System.out.println("enter 1 to continue \n enter 0 to exit");
enter = input.nextInt();
} while (enter != 0 || enter > 1 );
break;
case 2:
do{
System.out.println("you chose plane");
System.out.println("what value would you like to enter moveForward");
n = input.nextInt();
Planeobj.moveForward(n);
Planeobj.displayCoordinates();
System.out.println("what value would you like to enter moveBackward");
n = input.nextInt();
Planeobj.moveBackward(n);
Planeobj.displayCoordinates();
System.out.println("what value would you like to enter moveLeft");
n = input.nextInt();
Planeobj.moveLeft(n);
Planeobj.displayCoordinates();
System.out.println("what value would you like to enter to moveRight");
n = input.nextInt();
Planeobj.moveRight(n);
Planeobj.displayCoordinates();
System.out.println("Would you like to continue?");
System.out.println("enter 1 to continue \n enter 0 to exit");
enter = input.nextInt();
} while (enter != 0 || enter > 1 );
break;
case 3:
do{
System.out.println("you chose ship");
System.out.println("what value would you like to enter for moveForward");
n = input.nextInt();
ShipObj.moveForward(n);
ShipObj.displayCoordinates();
System.out.println("what value would you like to enter moveBackward");
n = input.nextInt();
ShipObj.moveBackward(n);
ShipObj.displayCoordinates();
System.out.println("what value would you like to enter moveLeft");
n = input.nextInt();
ShipObj.moveLeft(n);
ShipObj.displayCoordinates();
System.out.println("what value would you like to enter moveRight");
n = input.nextInt();
ShipObj.moveRight(n);
ShipObj.displayCoordinates();
System.out.println("Would you like to continue?");
System.out.println("enter 1 to continue \n enter 0 to exit");
enter = input.nextInt();
}while(enter !=0 || enter >1);
break;
case 4:
return;
}
}else if (entVal != 1){
return ;
}
}}
car class:
package Lab4;
public class Car implements Movable{ //implements Movable interface
int x,y;
public Car(){ //makes constructor
this(0,0);
}
public Car(int x, int y) {//overloaded constructor with two ints
this.x = x; //makes the cordinates int x and y equals fields x and y.
this.y = y;
}
@Override
public void moveForward() {
this.x += 1;
}
@Override
public void moveForward(int x) {
this.x += x; //invokes x and adds the x to the user input of the previous value
}
@Override
public void moveBackward() {
this.x -= 1;
}
@Override
public void moveBackward(int x) {
this.x -=x;
}
@Override
public void moveLeft() {
this.y -=1;
}
@Override
public void moveLeft(int y) {
this.y -=y;
}
@Override
public void moveRight() {
this.y += 1;
}
@Override
public void moveRight(int y) {
this.y += y;
}
@Override
public void displayCoordinates() {
System.out.println(x +" "+ y);
}
}
plane class:
package Lab4;
public class Plane implements Movable{//implements movable interface
int x,y; //declares x and y as the fields
public Plane(){
this(0,0); //makes coordinates to (0,0)
}
public Plane(int x, int y) {
this.x = x;
this.y = y;
}
@Override //calls methods of movable interface
public void moveForward() {
this.x += 1;
}
@Override
public void moveForward(int x) {
this.x += x;
}
@Override
public void moveBackward() {
this.x -=1;
}
@Override
public void moveBackward(int x) {
this.x -=x;
}
@Override
public void moveLeft() {
this.y -=1;
}
@Override
public void moveLeft(int y) {
this.y -=y;
}
@Override
public void moveRight() {
this.y -=1;
}
@Override
public void moveRight(int y) {
this.y -=y;
}
@Override
public void displayCoordinates() {//displays coordinates
System.out.println(x + " " + y);
}
}
ship class:
package Lab4;
public class Ship implements Movable{//implements movable interface
int x,y;
public Ship(){
this(0,0);
}
public Ship(int x, int y) {
this.x = x;
this.y = y;
}
@Override
public void moveForward() {
this.x += 1;
}
@Override
public void moveForward(int x) {
this.x += x;
}
@Override
public void moveBackward() {
this.x -=1;
}
@Override
public void moveBackward(int x) {
this.x -= x;
}
@Override
public void moveLeft() {
this.y -=-1;
}
@Override
public void moveLeft(int y) {
this.y -= y;
}
@Override
public void moveRight() {
this.y += 1;
}
@Override
public void moveRight(int y) {
this.y += y;
}
@Override
public void displayCoordinates() {
System.out.println(x + " " + y);
}
}
screenshots:
