jeanda stands for "Java Efficiency and Agility Analysis". It is a set of ant tasks and supporting Java code which are intended to be inserted into project builds. When inserted, it compares the .class files in the build fileset with previous builds, with the help of BCEL.
It is intended to be fast, relatively space efficient, and non-intrusive - if successful in these respects, then it will not inhibit project builds. And, as long as it does not hinder project builds, then it has the capability to provide useful raw experimental data from a variety of Java development projects.