public Station getStationSuivante(Station s){
		if(!stations.contains(s)){
			return null;
		}
		for (int i = 0; i < stations.size(); i++) {
			if(s.getNom().equals(stations.get(i).getNom())){
				if(i < stations.size()){
					return stations.get(i+1);
				}
			}
		}
		return null;
	}