The org.apache.commons.jxpath package defines a simple interpreter of an expression language called XPath. JXPath applies XPath expressions to graphs of objects of all kinds: JavaBeans, Maps, Servlet contexts, DOM etc, including mixtures thereof.
JXPath home page: http://commons.apache.org/jxpath/
Articles
- Java object queries using JXPath - Bart van Riel, JavaWorld, March 2007
- JXPath Tutorial by Bart van Riel
http://phpforms.net/tutorial/tutorial.html - tutorials for beginners in web programming.