Java OSX app bundle base directory

Java OSX app bundle base directory

I've created Java 1.7 application with OSX bundle by maven using
AppBundlerTask (which is probably the only good solution for 1.7 and
maven). Application is using log4j and hibernate so it creates some
folders at runtime, and the base directory for all folders is home, so all
directories are creating in home e.g. "db" "logs" etc. I want to create
all this directories and files in app directory, how to configure
AppBundlerTask?
Or maybe do u know some other way of creating OSX bundle for 1.7 with
maven (osxappbundle-maven-plugin probably not supports java 1.7, after
migrating from 1.6 it still using 1.6 at runtime Application is using Java
6 from Apple instead of Java 7 from Oracle on Mac OS X?)