What is the best JAVA framework ?

Spring is the best framework.
as it is smaller in size and no need for extra server.
flow will be easy in spring framework

Struts2, as it follow MVC pattern

eclipse

Spring & play framework

Of course, Spring is the best Java framework.
It has all the needed modules to develop a full stack app.
ORM, AOP, Security, web MVC.

primefaces

I think spring is a modern framework I will start to use it, Thank you all for your answers

I think Spring and JSF 

EJB3.
is the best ,with the Singleton design patern and others who facilate the gestion of all classes with your need

eclipse