private Location rechercherLocation(int numero){
		System.out.println("ModeleLocations::rechercherLocation()") ;
		Location location = null ;
		int i = 0 ;
		while(i < this.locations.size() && location == null){
			if(this.locations.get(i).getNumero() == numero){
				location = this.locations.get(i) ;
			}
			else {
				i += 1 ;
			}
		}
		return location ;
	}