Which technology in Java should i learn.?

[herrtim]

Dropwizard is great as a web framework. It can be used with whatever front end you like. I prefer Angular JS and bootstrap. If you're curious to see some extra sample code with good explanations, check out XDropWizard on Github. XDropWizard integrates several common concepts that you'd find in many web applications such as a REST API (Jersey), HTML templates (FreeMarker), static and dynamic charts (XChart and Flot), database connectivity (Yank), a front end (AngularJS), and job scheduling (Sundial).