public String Judge(String menuOption) {
        String PrintContent = null;
        ArrayList<Book> bookArrayList = bookList.CreateBookList();
        ArrayList<Movie> movieArrayList = movieList.CreateMovieList();

        if(menuOption.equals("help")){
            PrintContent = HelpPrintContent(CreateMenuOptions());
        }
        else if(menuOption.equals("view")){
            PrintContent = ViewPrintContent(bookArrayList);
        }
        else if(menuOption.matches("reserve\\s(.*)")){

                for(int i = 0; i < bookArrayList.size(); i++){
                    if(menuOption.split("\\s")[1].equals(bookArrayList.get(i).getBookName())){
                        if(bookArrayList.get(i).getBookStatus().equals("valid")){
                            PrintContent = ReserveValidPrintContent();
                        }
                        else{
                              PrintContent = ReserveInvalidPrintContent();
                        }
                        break;
                    }
                    else{
                        PrintContent = ReserveInvalidPrintContent();
                    }
                }
        }
        else if(menuOption.equals("check")){
            PrintContent = CheckPrintContent();
        }
        else if(menuOption.equals("viewMovie")){
            PrintContent = viewMoviePrintContent(movieArrayList);
        }
        else {
            PrintContent = SelectInvalidMenuOptionPrintContent();
        }
        return PrintContent;

    }