Ant or Maven ?

Hi ,
As we know good build tools like Ant ,Maven which one to use?
Ofcourse Now adays every body say Maven .
Here are advantages for Maven over Ant
1) Dependency management
2) built in tags for compilation etc..
3)easy to integrate with PMD etc.

where as In Ant a lot of scripts u need to write..
Well hold on here is another question correct maven is doing good build tool
here are some questions
1) why we need still xml related things to write as some users are not aware much ?
2) there are some situations like same jars of different versions in different places coincide in through maven scripts then finding solution is very difficult .
3) why maven reposorities required where our jars not found

Here are some of emerging build tools are here
1)Gradle
2)Gant
3)Raven

still Gradle has certailn feaures depency mangagement , it has only few lines of configuration needed.
Here is the link.
http://gradle.org/