Hi everyone, I am tryng hard to get help on this site with the same problem,

It seems very hard for people to understand the issue. I have a project on purple box, if someone know how the purple box(renting movies ) works, he may help me.

I have all the interfaces ready(each interface has some tips that shows how each method in its implemented class should be written). This is what I got so far(3 interfaces with 3 associated classes):

Interfaces

1)

public interface AdminADT {

/**

* @require need to go through Movie Object

* @ensure adding a Movie Object to Movie Inventory

*/

public void addMovieToInventory(Movie addMovieToInv);

/**

* @require name of movie to be removed

* @ensure move is removed from inventory list

*/

public void removeFromInventory(Movie removeFromInv);

/**

* @require Type double to change price of movie

* @ensure movie price is changed

*/

public void changePrices(double changePrice);

/**

* @require integer amount of movies for discount

* @ensure discount applied to user's cart

*/

public void volumeDiscount(int volDiscount);

/**

* @require string to use as promo code

* @ensure promo code is created that client is able to apply to cart

*/

public void addPromoCode(String addPromo);

/**

* @require boolean to disable/enable unit

* @ensure cart is disabled/enabled

*/

public boolean isEnable(boolean isEnable);

}

2)

public interface MovieADT {

/**

* @require object with movie title exists

* @ensure movie title in type String is returned

*/

public String getTitle();

/**

* @require: title must be a String

* @ensure: Sets the title attribute of the movie class

*/

public void setTitle(String title);

/**

* @ensure: Returns the genre attribute of the movie class

*/

public String getGenre();

/**

* @require genre in type string to be set

* @ensure Genre is set by String that is passed through

*

*/

public void setGenre(String genre);

/**

* @require

* @ensure returns a Date object representing the movie was released

*/

public String getReleaseDate();

/**

* @require : Movie hasDate

* @ensure: valid date

*/

public void setReleaseDate(String date);

/**

* @require: movie is either bluray or not

* @ensure: true | false

*

*/

public boolean getIsBluRay();

/**

* @require: Movie object

* @ensure: isBluray = 0 | 1

*

*/

public void setIsBluRay(boolean bluRay);

/**

* @require: price >= 0

* @ensure: price is not negative

*

*/

public double getPrice();

/**

* @require price must be type double >= 0

* @ensure price is set with type double pass through

*/

public void setPrice(double price);

/**

* @ensure quantity of movie object is returned in type int

*/

public int getQuantity();

/**

* @require: quantity >= 0

* @ensure: valid positive integer

*/

public void setQuantity(int quantity);

/**

* @ensure String representation of Movie is returned

*/

public String toString();

}

3)

public interface PurpleBoxUserInterface{

/**

* @require Movie object needs a title

* @ensure String of movie title is returned

*/

public ArrayList searchTitle(String movieTitle);

/**

* @require Movie object must need genre

* @ensure String of movie genre is returned

*/

public ArrayList searchGenre(String movieGenre);

/**

* @require

* @ensure Returns all new releases to the user

*/

public ArrayList searchNewReleases(int daysFromRelease);

/**

* @require search for Blu ray passing in the array

* @ensure Returns the list of bluray movies

*/

public ArrayList searchBluRay(boolean isBluRay);

/**

* @require User adding a movie to the cart

* @ensure

*/

public void addMovie(Movie movieName);

/**

* @require adding movie to the user list

* @ensure User will have movies in the cart to check out

*/

public void removeFromCart(Movie movie);

/**

* @require User removing all movies from the cart

* @ensure all movie objects are removed from cart

*/

public void removeAllFromCart();

/**

* @require User checks what's available

* @ensure Returns all available movies to the user

*/

public boolean checkAvailability(Movie movie);

/**

* @require

* @ensure entire cart is checked out to user

*/

public void checkOutMovie(Movie movie);

/**

* @required

* @ensure User returns all movies rented

*/

public void returnMovie(Movie returnMovie);

/**

* @require Apply a certain data type to retrieve a promotional code

* @ensure Applying code to give a client the discount

*/

public void applyCode(String applyCode);

}

implented classes

1) incompleted class, need some hand with code

public class Admin implements AdminADT{

public void addMovieToInventory(Movie addMovieToInv) {

this.addMovieToInventory(addMovieToInv);

}

public void removeFromInventory(Movie removeFromInv) {

this.removeFromInventory(removeFromInv);

}

public void changePrices(double changePrice) {

this.changePrices(changePrice);

}

public void volumeDiscount(int volDiscount) {

this.volumeDiscount(volDiscount);

}

public void addPromoCode(String addPromo) {

this.addPromoCode(addPromo);

}

public boolean isEnable(boolean isEnable) {

return false;

}

}

2) incompleted class, may need some modifications

public class Movie implements MovieADT{

String movieName;

String title;

String genre;

String releaseDate;

double price;

int quantity;

public Movie(String movieName, String title, int quantity, String genre, boolean BluRay, String releaseDate,int price) {

}

public String getTitle() {

return title;

}

public void setTitle(String title) {

this.title = title;

}

public String getGenre() {

return genre;

}

public void setGenre(String genre) {

this.genre = genre;

}

public String getReleaseDate() {

return releaseDate;

}

public void setReleaseDate(String date) {

this.releaseDate = date;

}

public boolean getIsBluRay() {

return false;

}

public void setIsBluRay(boolean bluRay) {

}

public double getPrice() {

return price;

}

public void setPrice(double price) {

this.price = price;

}

public int getQuantity() {

return quantity;

}

public void setQuantity(int quantity) {

this.quantity = quantity;

}

}

3) incomplet

import java.util.ArrayList;

public class PurpleBox implements PurpleBoxUserInterface {

ArrayList movieList = new ArrayList<>();

ArrayList cart = new ArrayList<>();

public ArrayList searchTitle(String movieTitle) {

ArrayList returnList = new ArrayList();

for(Movie movie : movieList ) {

if(movie.getTitle().equals(movieTitle)) {

returnList.add(movie);

}

}

return returnList;

}

public ArrayList searchGenre(String movieGenre) {

ArrayList returnList = new ArrayList<>();

for(Movie movie : movieList ) {

if(movie.getGenre().equals(movieGenre)) {

returnList.add(movie);

}

}

return returnList;

}

@SuppressWarnings("unlikely-arg-type")

public ArrayList searchNewReleases(int daysFromRelease) {

ArrayList releasedYear = new ArrayList();

for(Movie movie : movieList ) {

if(movie.getReleaseDate().equals(releasedYear)) {

releasedYear.add(movie);

}

}

return releasedYear;

}

public ArrayList searchBluRay(boolean isBluRay) {

ArrayList movieType = new ArrayList();

for(Movie movie : movieList ) {

if(movie.getIsBluRay()) {

movieType.add(movie);

}

}

return movieType;

}

public void addMovie(Movie movieName) {

movieList.add(movieName);

}

public void removeFromCart(Movie movie) {

cart.remove(movie);

}

public void removeAllFromCart() {

cart.clear();

}

public boolean checkAvailability(Movie movie) {

return movieList.contains(movie);

}

public void checkOutMovie(Movie movie) {

movieList.remove(movie);

}

Hope to read someone soon, thanks in advance.