What are the Benefits of JAX-RPC ?

 Portable and interoperable web services 
 Ease of development of web services endpoints & clients
 Increased developer productivity 
 Support for open standards: XML, SOAP, WSDL 
 Standard API developed under Java Community Process 
 Support for tools 
 RPC programming model with support for attachments 
 Support for SOAP message processing model & extensions 
 Secure web services 
 Extensible type mapping