@WebService
public interface HelloWorld {
               
   String sayHi(String text);
               
   /* Advanced usecase of passing an Interface in.  JAX-WS/JAXB does not
   * support interfaces directly.  Special XmlAdapter classes need to
   * be written to handle them
   */
   String sayHiToUser(User user);
               
   /* Map passing
   * JAXB also does not support Maps.  It handles Lists great, but Maps are
   * not supported directly.  They also require use of a XmlAdapter to map
   * the maps into beans that JAXB can use. 
   */
   @XmlJavaTypeAdapter(IntegerUserMapAdapter.class)
   Map<Integer, User> getUsers();
}
            

...
private Client() {
} 
            
   public static void main(String args[]) throws Exception {
   Service service = Service.create(SERVICE_NAME);
   // Endpoint Address
   String endpointAddress = "http://localhost:9000/helloWorld";
            
   // Add a port to the Service
   service.addPort(PORT_NAME, SOAPBinding.SOAP11HTTP_BINDING, endpointAddress);
            
   HelloWorld hw = service.getPort(HelloWorld.class);
   System.out.println(hw.sayHi("World"));
            
   User user = new UserImpl("World");
   System.out.println(hw.sayHiToUser(user));
            
   //say hi to some more users to fill up the map a bit
   user = new UserImpl("Galaxy");
   System.out.println(hw.sayHiToUser(user));
            
   user = new UserImpl("Universe");
   System.out.println(hw.sayHiToUser(user));
            
   System.out.println();
   System.out.println("Users: ");
   Map<Integer, User> users = hw.getUsers();
   for (Map.Entry<Integer, User> e : users.entrySet()) {
      System.out.println("  " + e.getKey() + ": " + e.getValue().getName());
   }
}
...