The best solution I've found for that is Clojure and ClojureScript. That combination allows you to create a single, self-contained jar file that runs a local we

The best solution I've found for that is Clojure and ClojureScript. That combination allows you to create a single, self-contained jar file that runs a local web server and opens a localhost address using your default browser. From there, it serves the web app you wrote. My IDE called Nightcode (see nightcode.info) has a template for that. You just click "New Project", give it a name, and then choose the "Web" template. It will generate a project that builds a single jar file like I described. Sorry for being off-topic but I figured it might be what you want.