Description: This article shows you how to use Sun ONE Studio 4 to create a client that accesses the Amazon Web Service. A Web Service client can be a simple client based on JavaServer Pages (JSP) technology, or it can be more sophisticated and use the Swing APIs. This article shows you how to use the tool to develop a Swing-based client that communicates to the Amazon Web Service through proxy or stub classes generated from the WSDL file. The communication is via SOAP and relies on remote procedure calls implemented with the Java API for XML-based Remote Procedure Call (JAX-RPC) runtime. It is this remote procedure call mechanism that enables a remote procedure call from a client to be communicated to a remote server.