How can i build the 2.1 version to a .jar file to import in java?

[jp.xi...@gmail.com]

I can only find 2.0 version in the release file and some .java code in core file. But i don't know how to use it ,so , I want to build a jar to import in my project ,could someone can help me to build it or teach me how to use hipi. thanks!