public void appMng() throws IOException
{
    Scanner in = new Scanner(System.in);   
    System.out.println("-----------------------");
    System.out.println("App Management Menu");
           System.out.println("1.Create New App");
           System.out.println("2.Delete App");
           System.out.println("3.Edit App");
           System.out.println("4.Search for App");
           System.out.println("5.Display total App");
           System.out.println("6.Return to Main Menu");
           System.out.println("Type a number to select an option");
           String choice = in.nextLine();
        switch (choice) {
            case "1":
                createApp();
                break;
            case "2":
                deleteApp();
                break;
            case "3":
                editApp();
                break;
            case "4":
                searchApp();
                break;
            case "5":
                System.out.println("There are currently "+numOfApps+" App(s).");
                appMng();
                break;
            case "6":
                mainMenu();
                break;
            default:
                System.out.println("Not a valid option.");
                System.out.println("-----------------------");
                appMng();
                break;
        }
   }