utility class: final with private constructor

git-svn-id: https://svn.apache.org/repos/asf/jackrabbit/oak/trunk@1450829 13f79535-47bb-0310-9956-ffa450edef68
@code

git-svn-id: https://svn.apache.org/repos/asf/jackrabbit/oak/trunk@1450830 13f79535-47bb-0310-9956-ffa450edef68
remove funny annotation

git-svn-id: https://svn.apache.org/repos/asf/jackrabbit/oak/trunk@1450831 13f79535-47bb-0310-9956-ffa450edef68