Thanks for your replay. What is SAAJ? and do you have any example or link to follow?

Thanks for your reply. do you have any links or example to create the java service?

I am  trying to call a secured Webservice from AEM Workbench. While loading the Webservice we are providing the WSDL url and user name and password in the specified fields. While loading the webservice we are getting 401 unauthorized error.Error message :  Error in loading WSDL:java.io.IOException. ...