play framework:what Is the difference between play.api.mvc and play.mvc packages

Question

while I working with play I encounter two choices play.api.mvc and play.mvc packages

what Is the difference?

Answer 1

From the play! 2 documentation:

The API available in the play.api package (such as play.api.mvc) is reserved for Scala developers. As a Java developer, look at play.mvc.

Source: Play for Java developers