Java WebServices VS JAVA API SOAP

Hi All,

   We can use two ways of Java client Implementation to connect OutputService via SOAP Protocol.

1) WSDL2JAVA : Create java classing using OutputServer?WSDL file.

2) Use Connection parameters

        ConnectionProps.setProperty("DSC_DEFAULT_SOAP_ENDPOINT", http://localhost:8080);

        ConnectionProps.setProperty("DSC_TRANSPORT_PROTOCOL","SOAP");

Which is the difference between the above two implemenations?

What are advantages and disadvantages over one another?

Regards

Krishna.