/Principal.html?is-external=true" title="class or interface in java.security">Principal</a>&nbsp;getUserPrincipal()</pre>
<div class="block">Returns a <code>java.security.Principal</code> instance that 
  contains the name of the authenticated user for the current
  method invocation on the endpoint instance. This method returns
  <code>null</code> if there is no associated principal yet. 
  The underlying Jakarta XML RPC runtime system takes the responsibility
  of providing the appropriate authenticated p