public Garage() {

        BufferedReader br = null;
        try {
            br = new BufferedReader(new FileReader("voitures.txt"));
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        }
        try {
            if (br.readLine() == null) {
                System.out.println("Aucune voiture sauvegardée !");
            }
        } catch (IOException e) {
            e.printStackTrace();
        }

        this.voitures = new ArrayList();
    }