MVEL

MVEL is a powerful expression language for Java-based applications. It provides a plethora of features and is suited for everything from the smallest property binding and extraction, to full blown scripts. MVEL is general purpose. It may be useful as an extension to anything from use in JSP Tag Libraries, to the configuration facilities of your library/framework. In addition to being an expression language, MVEL also comes packaged with an equally high-performance templating system similar to Velocity and FreeMarker.