Develop Your Own Google with Apache Lucene (Java Nutch Solr) Apache Lucene is Open Source API that allows a Java developer (.Net libraries available) to write indexing and full-text search capable applications.
I have been writing applications based on Lucene for the last 3 years and some of the applications have been deployed at large corporations. I know there are other libraries available to developers who wish to write indexing engine but this blog will solely focus on Apache Lucene. Nuxeo.org. Tapestry - Welcome to Tapestry. Authorization concepts and solutions for J2EE applications. Hibernate can meet your validation needs.