This Content Negotiation Filter provides a content negotiation filter for Java servlet containers. The content negotiation algorithm is based on the Apache Negotiation Algorithm but lacks support for the encoding and character set. The variants can be configured through an XML file, negotiation.xml, in the WEB-INF/classes directory. This file can be overriden with the 'negotiation' filter parameter. This XML file is parsed with the class 'com.mattunderscore.filter.contentnegotiation.parser.NegotiationDOMParser'. This class can be overriden with the 'negotiationParser' filter parameter. It is intended that a more efficient SAX parser will be implemented later. Alternative parsers or XML representations are supported so long as the parser implements the 'com.mattunderscore.filter.contentnegotiation.parser.NegotiationXMLParser' interface and returns a list of 'com.mattunderscore.filter.contentnegotiation.parser.Variant' objects.