code: public synchronized ServletStats initServletStats(String _app, String _ser) {
          String _key = _app + "." + _ser;
          ServletStats nStats = this.servletCountByName.get(_key);
          if (nStats == null) {
               nStats = new ServletStats(_app, _ser);
              this.servletCountByName.put(_key, nStats);            
          }
          return nStats;
      }
docs: Method : initServletStats()
  
  @param _app = Application Name
  @param _ser = Servlet Name
  
  This method will create ServletStats object for current servlet.
  This method needs to be synchronised.
  
  This method gets called only at first request.