code: private void computeMaxSize() {
  		threshold = (int) (elementKeys.length * loadFactor);
  		if (log.isDebugEnabled()) {
  			log.debug(this.getClass().getName() + "::computeMaxSize()=" + threshold + " collisions="
  					+ collisions + " (" + (collisions * 100 / elementKeys.length) + ")");
  		}
  		collisions = 0;
  	}
docs: Returns a shallow copy of this map.
  
  @return a shallow copy of this map.