How WSDL Works in the World of Java Technology

The following diagram illustrates how a Web service is registered, found and called in a scenario based on Java technology. In this diagram, the Web service is registered in a UDDI repository using the Java API for XML Registries (JAXR), where a business partner or other system can find the service. The registry information from UDDI is used to locate a WSDL document that details the call semantics for the Web service. With the WSDL document in hand, the Java programmer can then feed it to a tool that can generate a Java object proxy to the Web service, or simply use it as a reference document along with a lower-level SOAP API.