Does JSP provide more flexibility then FreeMarker or is it other way around? My back-end involves Servlets. Which one is used under what circumstances?
Answer
JSP is going to let you do more things in the view layer, so you might say that makes it more flexible. Things you probably shouldn't be doing though, which one could argue as a benefit for FreeMarker. It would afford you more control over what the view layer can do and force a better separation of concerns.
There's not really any right answer here. You can technically accomplish just about anything with either for your UI. Without more details about your project it's hard to make a recommendation. About the only thing I can say is that you should probably use the MVC pattern. It can be accomplished with either.