A client browser has cookies turned off and is interacting with a servlet that is using HTTP
sessions for client state management. According to J2EE Patterns best practices, which technique
or technology should be used by the servlet programmer in order to maintain this client’s state?

A.
Client-side certificates

B.
Servlet events

C.
URL encoding

D.
Hidden fields

E.
Use of persistent sessions

F.
Creation of a new session at the beginning of the service method

G.
Servlet filters