Another Rails-like web framework: Waffle

<context-param>
        <param-name>waffle.context.manager</param-name>
        <param-value>com.thoughtworks.CustomRegistrar</param-value>
    </context-param>

public class AutomobileAction {
        private Car car;

        /**
         * This should be considered a Request level action because it has a dependency
         * on a HttpServletRequest object.
         */
        public AutomobileAction(HttpServletRequest request) {
            car = (Car)request.getAttribute("Car");
        }
    }