Primitive Collections for Java is an open source (LGPL) collections
framework for primitive Java types. The framework supports all primitive
types and includes bridges to the standard Java Collections Framework.
The aim of this alpha version is to stabilize the external API and work
towards a robust first release. The release includes the basic class
hierarchy for collections, sets, lists, maps, and adapters. Among other
things it provides a range based set implementation, and two different hash
based implementations of both sets and maps.
You can download the library and related documentation from
http://pcj.sourceforge.net/
Regards,
Søren Bak