The Java API for XML Registries (JAXR)
API provides a uniform and standard Java API for accessing different kinds of XML Registries. An XML registry is an enabling infrastructure for building, deploying, and discovering Web services.
This version of the JAXR specification includes detailed bindings
between the JAXR information model and both the ebXML Registry and the
UDDI Registry v2.0 specifications.
Please send feedback to jaxr-experts@east.sun.com.
Java Web Services Developer Pack 2.0
Download the latest release, which now supports WS-I Basic Profile 1.1 with Attachments 1.0 and XML and Web Services Security.
Java API for XML Registries Specification 1.0
Any use or implementation of the JAXR Specification is subject to this
license
agreement.

View Java API for XML Registries (JAXR) archived specifications
More information:
Java API for XML Registries (JAXR)
XML Downloads & Specifications
Java Technology & Web Services
Java Web Services Developer Pack
Sun ONE Application Server