public class Pair <K,V>  {
	private final K key; //non modifiable
	private V value;

	//constructeur
	public Pair(K k, V v){
		key = k;
		value = v;
	}

	public K getKey() {
		return key;
	}

	public V getValue() {
		return value;
	}

	//Modifie la valeur
	public V setV(V v){    //ou void
		value =v;
		return v;
	}