For automated code style checking, I created a rules file for CheckStyle based on the ACS coding conventions, and blogged on how to use it with Eclipse ( http://dlafferty.blogspot.co.uk/2013/07/apache-cloudstack-java-coding.html ).
However, the rules are not 100% correct, and it is difficult for the community to correct them. Would people be interested in adding it to master under ./tools/eclipse/acs_checkstyle.xml ?