Example Depot

// Create cache final int MAX_ENTRIES = 100; Map cache = new LinkedHashMap(MAX_ENTRIES+1, .75F, true) { // This method is called just after a new entry has been added public boolean removeEldestEntry(Map.Entry eldest) { return size() > MAX_ENTRIES; } }; // Add to cache Object key = "key"; cache.put(key, object); // Get object Object o = cache.get(key); if (o == null && !cache.containsKey(key)) { // Object not in cache. If null is not a possible value in the cache, // the call to cache.contains(key) is not needed } // If the cache is to be used by multiple threads, // the cache must be wrapped with code to synchronize the methods cache = (Map)Collections.synchronizedMap(cache);