import java.util.Scanner;

public class BestFriendsArrayList //calls all the methods after prompting the menu options.
{

    public static void main(String[] args) {

        BestFriendArrayListHelper myHelper = new BestFriendArrayListHelper();
        Scanner sc = new Scanner(System.in);
        System.out.println("Welcome to the friend phone book!\n ");
        int menuSelection = 0;
        do {
            System.out.println("\n1. Add a friend");                                //default menu options from user to choose from
            System.out.println("\n2. Change a friend's contact info");
            System.out.println("\n3. Remove a friend's contact info");
            System.out.println("\n4. Display a friend's contact info");
            System.out.println("\n5. Exit menu");
            System.out.print("Please make a selection: ");
            menuSelection = sc.nextInt();

            switch (menuSelection) //switch statements used to serve the choice of user according to options in menu.
            {
                case 1:
                    myHelper.addAFriend();
                    break;
                case 2:
                    myHelper.changeFriend();
                    break;
                case 3:
                    myHelper.deleteFriend();
                    break;
                case 4:
                    myHelper.displayFriend();
                    break;
                case 5:
                    break;
                default:
                    System.out.println("Invalid Menu Option, Please Try Again.");
            }

        } while (menuSelection != 5);
        System.out.println("Goodbye!");
    }
}