SOAP webservice string arguments by reference

Rogatzki <[email protected]> Wed, 15 Jun 2005 17:28:47 +0200
Newsgroups gmane.text.xml.soap.user
Message-ID <[email protected]>
how can I implement a soap webservice in java (using tomcat as a servlet container) 
with string function-arguments that have to be implemented 'by reference'.