private void subMenuAddMovie()
    {
        System.out.println("\n1. Add ISOImage to collection\n" +
                "2.Add DVD to collection");

        Scanner keyboard = new Scanner(System.in);
        int choice = keyboard.nextInt();
        boolean output = false;

        System.out.println("Now input some information about the movie...");
        System.out.print("Title: ");
        String title = keyboard.nextLine();

        System.out.print("ISBN: ");
        String isbn = keyboard.nextLine();

        System.out.print("Length: ");
        int length = keyboard.nextInt();

        System.out.print("Production year: ");
        int year = keyboard.nextInt();

        System.out.print("Studio name: ");
        String studio = keyboard.nextLine();
        Movie temp = null;

        switch(choice)
        {
            case 1:
                System.out.print("ISOImage size: ");
                float size = keyboard.nextFloat();
                temp = new ISOImage(title, isbn, length, year, new Studio(studio), size);
                break;
            case 2:
                System.out.print("Nr of Discs: ");
                int discs = keyboard.nextInt();
                temp = new DVD(title, isbn, length, year, new Studio(studio), discs);
                break;
        }

        this.myMovies.put(isbn, temp);
    }