public synchronized V put(K key, V value) {
Element<V> element = new Element<V>();
element.date = System.currentTimeMillis();
element.value = value;
map.put(key, element);
return value;
}
public synchronized V get(K key) {
V value = null;
Element<V> element = map.get(key);
if (element != null) {
element.date = System.currentTimeMillis();
value = element.value;
}
return value;
}