public class Exemple {
    public static void main(String[] args) {

        MonBrin brin = new MonBrin();

        brin.ajouterFin(Base.G);
        brin.ajouterFin(Base.C);
        brin.ajouterFin(Base.T);
        brin.ajouterFin(Base.T);
        brin.ajouterFin(Base.A);
        brin.ajouterFin(Base.G);

        System.out.println(brin); // gcttag

        
        Iterator<Base> it = brin.iterator();
        while(it.hasNext()) {
            System.out.println(it.next());
        }
    }
}