Java 8 in a JEE Environment

[Ian Clough]

I am wondering how the parallel mode operations will play in a JEE 
environment where the container is largely responsible for the threading 
behaviour of the application. Suppose we have a statistics package which 
uses parallel operations, we would want this to operate in parallel mode 
for a single user and possible in lightly loaded JEE server environments 
but would want sequential mode in heavily loaded JEE environment. I am 
assuming, possibly wrongly, that parallel mode is significantly less 
efficient than sequential.