General-hash-functions-java is a project mainly written in Java, it's free.
Java version from Arash Partow's collection of hash function libraries
This is the maven-packaged version of Arash Partow's library of general hash functions in Java. Find more information about it and implementations in a whole range of other languages on Arash's website.
It licensed under CPL1.0. See cpl-v10.html in the project root for the details of the terms that apply.