for(int idx = 0; idx < tabSize; idx++) { if(keys[idx] == null || keys[idx] == REMOVED) continue; listener = (UpdateListener) keys[idx];
for (Iterator i = keySet().iterator(); i.hasNext(); ) { listener = (UpdateListener) i.next();
	public void debug() {		LOG.debug("Registered UpdateListeners:");		UpdateListener listener;		for(int idx = 0; idx < tabSize; idx++) {	        if(keys[idx] == null || keys[idx] == REMOVED)	            continue;	        listener = (UpdateListener) keys[idx];	        listener.debug();		}	}