2009/6/8 Doug Lea <d...@cs.oswego.edu>:
> It is possible to use a look-aside strategy for tiny
> HashMaps. I think one of the Apache commons maps
> does this.

FYI - Commons Collections Flat3Map:

http://commons.apache.org/collections/api-3.2/org/apache/commons/collections/map/Flat3Map.html

Stephen

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