Chex4j allows you to document and enforce @pre and @post conditions of method calls with runtime or build time class file instrumentation. Conditions run as fast as normal code.
Simple use of javadbf (http://javadbf.sarovar.org) class. Allows import / export files from a Siemens Step7 project . Allow to put your logic files under SVN o similar (easy and fast!) NEW VERSION IS READY, NO CONFIGURATION NEED!