GNU JAF is a framework for declaring what beans operate on what MIME type data. Content handler beans can be defined to handle particular MIME content. The JAF unites internet standards for declaring content with JavaBeans™. The JAF defines two mechanisms within the framework. The first, the file type map, specifies the MIME content type for a given file. The default implementation of this uses the UNIX mime.types format to map filename extensions to MIME types. The second mechanism, the command map, specifies the actions that can be applied to a given MIME content type. The default implementation of this uses the standard mailcap format to map actions to JavaBean™ classes. These beans can then view, edit, print, or perform whatever other action is required on the underlying resource.