Ant (Score 2, Informative)

I'm a novice when it comes to automated build tools, but I've been impressed by Ant, from the Jakarta project by the Apache Group. From what I've read, it seems that Ant can do almost everything autoconf can, but because it's written in Java and uses XML to store its configuration, there are no cross-platform issues. I should add that I have *very* limited experience with autoconf; I've really only *used* it, not developed with it, so my opinion is a fairly uneducated one. Has anyone else used Ant and autoconf enough to make a good argument for or against Ant?