I´m building application SPA using angular.js with yeoman which connect with a API RESTful made in Java using spring-MVC . i´m begginer for deploy web applications in angular
Then your frontend code is production-ready, just run $ grunt build
and serve static resources produced by Yeoman (Grunt in fact) by the very same server that is responsible for providing the backend of your app.
take a look at my answer to similar question, showing project structure and some necessary configuration for Yeoman & Spring-MVC.
In some more advanced deployments scenarios, there might be a need for introducing load-balancing and you might need separate servers for the frontend and backend, but we are talking about basic config here.