problem to call web service without WSDL URI

[giuseppe astarita]

Hi, j have write a static client to call a web-service deployed, it function if j give the wsdl uri to the Impl class but if i don't give it
show this error message:
"java.rmi.RemoteException: SOAP Fault:javax.xml.rpc.soap.SOAPFaultException: Failed to send request"

WHY? THANKS FOR ANSWER