try (Connection connection = DriverManager.getConnection("jdbc:mysql://localhost/films?", connInfo);
         PreparedStatement statement = connection.prepareStatement("INSERT INTO films(name_film, rating, description, poster, path, year_of_release) VALUE (?, ?, ?, ?, ?, ?)")) {

        for (File film:films) {

            String actors = new String(Files.readAllBytes(Paths.get(film.getPath() + "/actors.txt")));
            String description = new String(Files.readAllBytes(Paths.get(film.getPath() + "/description.txt")));
            String genres = new String(Files.readAllBytes(Paths.get(film.getPath() + "/genres.txt")));
            String names = new String(Files.readAllBytes(Paths.get(film.getPath() + "/names.txt")));
            String Producer = new String(Files.readAllBytes(Paths.get(film.getPath() + "/Producer.txt")));
            String year = new String(Files.readAllBytes(Paths.get(film.getPath() + "/year.txt")));

            String[] namesArray = names.split(" / ");
            for (int i = 0; i<namesArray.length; i++) {
                namesArray[i] = namesArray[i].trim();
            }



            statement.setString(1, new Gson().toJson(namesArray));
            statement.setInt(2,5);
            statement.setString(3, description);
            statement.setString(4,film.getPath() + "/poster.jpg");
            statement.setString(5, film.getPath() + "filmName");
            statement.setInt(6,Integer.parseInt(year.trim()));
            statement.executeUpdate();


        }//for
    }

INSERT INTO films(name_film, rating, description, poster, path, year_of_release) VALUE ("world's dog", 5, "Привет мир", "Пока мир", "world's dog", 2017);