code: public static void setHtmlHotDeploy(final WebApplication application)
  	{
  		application.getResourceSettings().setResourcePollFrequency(Duration.ONE_SECOND);
  		final String slash = "/";
  		String realPath = application.getServletContext().getRealPath(slash);
  		if ((realPath != null) && !realPath.endsWith(slash))
  		{
  			realPath += slash;
  		}
  		final String javaSourcePath = realPath + "../java";
  		final String resourcesPath = realPath + "../resources";
  		addResourceFinder(application, javaSourcePath);
  		addResourceFinder(application, resourcesPath);
  	}
docs: Use this method to enable hot deploy of your html templates on development. Works only with
  jetty. Only for
  
  @param application
  the new html hot deploy