Just curious about the following:
A) How often are Listeners used in real-world
Servlets?
B) How often are Listeners used/questioned in the exam?
From a personal standpoint, I can see listeners being useful at specific times, but not used a lot and not common (seen maybe once or twice in a webapp)
However, I'm worried that this is one of those things that will be on the exam that is pounded on even though it doesn't hold as high of a value in the real world. I've just noticed that in other exams I have taken for C, C++ and PHP that for some reason the exam creators pick some obscure and not commonly used feature and pound it into the exam multiple times neglecting a real-world perspective just to trick the exam taker.
Although, since I'm new to
Java and Servlet/JSP technology, I am probably wrong. Just a guess at first glance.
So, are they used a lot in real-world applications? If so or even if not, how often are then on the exam?