Apache Maven 2

An OSS (Apache) structured build and repository tool in Java.

Maven has the potential to bring CPAN-like ease-of-use to Java applications (with the help of Ant Anywhere).

Resources

Maven Home Page

The POM demystified, JavaWorld Article

Maestro is a complete client/server bundle of Maven and a repository. Mergere provides commercial services to support Maven use. Maestro info

Other tools

http://java-source.net/open-source/build-systems