code: public void contextInitialized(ServletContextEvent event) {
          this.context = event.getServletContext();
  
          // Output a simple message to the server's console
          System.out.println("The Simple Web App. Is Ready");
  
          ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext(
                  "/client.xml");
          LocatorService client = (LocatorService) context
                  .getBean("locatorService");
  
          String serviceHost = this.context.getInitParameter("serviceHost");
  
          try {
              client.registerEndpoint(new QName(
                      "http://talend.org/esb/examples/", "GreeterService"),
                      serviceHost, BindingType.SOAP_11, TransportType.HTTP, null);
          } catch (InterruptedExceptionFault e) {
              e.printStackTrace();
          } catch (ServiceLocatorFault e) {
              e.printStackTrace();
          }
      }
docs: is ready to service requests