What is the basic need to use servlets?

Alex Chaffee

Everyone needs a servlet!

That's right, it filets, it chops, it dices, slices,
Never stops, lasts a lifetime!

It mows your lawn
It picks up the kids from school
It gets rid of unwanted facial hair, it gets rid of embarrassing age spots,
It delivers a pizza,
It lengthens, it strengthens
It entertains visiting relatives,
It turns a sandwich into a banquet
It gets rid of your gambling debts,
it quits smoking

It's a friend, it's a companion.
It's the only product you will ever need

It gives you dandruff, and it finds you a job,
It is a job

(Apologies to Tom Waits)

See also What is a servlet?