import java.util.ArrayList;

/** * An app store containing apps * * Modifications: * CT: Create AppStore with a list of apps and basic methods to add, clear, and print apps * * @author Cara Tang * @version 2018.02.17 */ public class AppStore { private String appStoreName; private ArrayList appList; /** * Create an app store with the given name * @param name the name of this app store */ public AppStore(String name) { appStoreName = name; appList = new ArrayList(); } /** * Populate the store with a few apps. * Use this method to make testing easier. After creating an AppStore, * call this method to populate the apps, and then test your methods. */ public void populateApps() { addApp("Pandora Music", "Pandora", 0); addApp(new App("Minecraft", "Mojang", 6.99, 3)); // TODO: ------------------------ 1 -------------------------- // TODO: Add a few more apps. } /** * Add the given app to the app store * @param anApp an app to add */ public void addApp(App anApp) { appList.add(anApp); } /** * Create an app with the given name, author, and price and add it to the store. * The app starts out unrated. * @param name name of the app * @param author the app author * @param price the price of the app */ public void addApp(String name, String author, double price) { appList.add(new App(name, author, price)); } /** * @return the number of apps in the store */ public int getNumberOfApps() { return appList.size(); } /** * Removes all the apps from the store */ public void clearAppStore() { appList.clear(); } /** * Print all the apps in the store */ public void printAppList() { System.out.println("============= " + appStoreName + " ============="); if (appList.size() == 0) { System.out.println("No apps in the store"); } else { for (App currentApp : appList) { currentApp.printAppInfo(); } } System.out.println("==========================================="); }

/** * Find an app based on its name * @param name the name of the app to search for * @return the app with the given name * or null if there is no app with that name */ // public App findApp(String name) // { // TODO: ------------------------ 2 -------------------------- // TODO: Uncomment the method wrapper and implement according to the header comment. // TODO: Do not change the method signature that is given. // TODO: Hint: One approach is to use a for-each to loop over each app in the list. // TODO: Inside the loop check if the app name matches and if so, return the app. // TODO: If the loop completes without returning, the app is not in the list and // TODO: you can return null. // } // TODO: ------------------------ 3 -------------------------- // TODO: Write a method called removeApp that takes a String parameter. // TODO: and removes the app with that name. // TODO: Hint: ArrayList has a remove method that takes an object that is the element // TOOD: to remove. You can call findApp to find the app to remove, and pass it to remove. // TODO: ------------------------ 4 -------------------------- // TODO: Write a method called getAppsByAuthor that takes a String parameter // TODO: and returns a list of apps by the given author. // TODO: If there are no apps with that author, return an empty list (not null). // TODO: Do not print anything in this method. // TODO: Hint: The structure of this method will be the same as the getUnsold method // TODO: from the Auction project. // TODO: ------------------------ 5 -------------------------- // TODO: Write a method called getNumAppsWithRating that takes an int parameter // TODO: representing a rating, and returns the number of apps in the app store // TODO: that have the given rating. // TODO: Example: If two apps in the store have rating 3, then the call // TODO: getNumAppsWithRating(3) will return 2. // OPTIONAL TODO: ------------------------ 6 -------------------------- // OPTIONAL TODO: This TODO is optional. // OPTIONAL TODO: Write a method called getMaxRatingOfAnApp (no parameters) that // OPTIONAL TODO: returns the maximum rating of an app in the app store. // OPTIONAL TODO: Example: If the store has 3 apps, one with rating 2 and two unrated, // OPTIONAL TODO: then the max rating is 2.

// TODO: ------------------------ 7 -------------------------- // TODO: Write a method called printAppStoreSummaryStats (no parameters, no return) // TODO: that prints the name of the app store, the total number of apps, the number of // TODO: apps of each rating, and the number of unrated apps. // TODO: If you implemented getMaxRatingOfAnApp, print the max rating as well. // TODO: Sample output: // ======== SUMMARY STATS for Joe's App Store ======== // Total # of apps: 3 // # apps rated 4: 0 // # apps rated 3: 0 // # apps rated 2: 1 // # apps rated 1: 0 // # of unrated apps: 2 // Max rating: 2 // ===========================================

}