public Iterator enumerateKeys() 
{
        return cache.keySet().iterator();
}

 public Resource get(Object key) 
{
        return (Resource) cache.get( key );
}

 public  void initialize(RuntimeServices rs) 
{
           
        rsvc = rs;
        int maxSize =
            rsvc.getInt(RuntimeConstants.RESOURCE_MANAGER_DEFAULTCACHE_SIZE, 89);
        if (maxSize  > 0)
        {
            // Create a whole new Map here to avoid hanging on to a
            // handle to the unsynch'd LRUMap for our lifetime.
            Map lruCache = Collections.synchronizedMap(new LRUMap(maxSize));
            lruCache.putAll(cache);
            cache = lruCache;
        }
        rsvc.getLog().debug("ResourceCache: initialized ("+this.getClass()+')");
}

 public Resource put(Object key,
    Resource value) 
{
        return (Resource) cache.put( key, value );
}

 public Resource remove(Object key) 
{
        return (Resource) cache.remove( key );
}