To clarify I get a centered 3 set of tabs where usually we get left aligned tabs. Could not find the reference and spent an hour with it. Running Mac OS X - El Capitan.
Are you a proponent of forcing people into frameworks in order to solve the simple problem of having instance data in a servlet? That sounds pretty silly to me.
Naturally one wouldn't instantiate servlets directly but since only one instance of a servlet answers ALL requests for that servlet you can only use instance variables when they are shared and/or thread safe throughout the various HTTP requests.
This means you have to create ways to house data that should otherwise be part of the class variables. This can be quite involved.
My proposal would solve this problem, hence its being proposed. That I would have to create a new type of object to pass around my functions, rewriting existing functions just to mimic the function of having instance variables is absurd.