Atom API for Java?

I've been trying to write something in Java that would automate some of the tasks I do while posting to one of my blogs, such as related links or tags.

I know Blogger uses Atom API, so I've looked around for a Java implementation of the Atom API. I could only find Atom4J, but their links seem to be broken.

If there is no choice, I'll have to write down my own implementation. Is that really neccessary?...