//metoda pentru scrierea datelor in fisier
    static void writeFile(Rute i) throws IOException{
        FileWriter fw = new FileWriter("rute.txt", true);
        BufferedWriter bw = new BufferedWriter(fw);
        bw.write(i.nr_ruta + " " + i.nume + " " + i.prenume + " " + i.loc_p + " " + i.loc_d + " " + i.marca_auto + " " + i.an + " " + i.culoarea + " " + i.cond + " " + i.tv + " " + i.km);
        bw.newLine();
        bw.close();
    }