Is it possible to run Java web application using Nginx server only without tomcat server?
If you only use static files and restful services (access by javascript framework) you can try Nginx-Clojureand its sub-project Nginx-Jersey.
If you use servlet/jsp based web application you can try Nginx-Clojureand its sub-project Nginx-Tomcat8 which does not use tomcat as a server but only a servlet package and does use Nginx as the HTTP server.