Fowler on POJO
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"I've come to the conclusion that people forget about
regular Java objects because they haven't got a fancy name - so
while preparing for a talk Rebecca Parsons, Josh Mackenzie and I
gave them one: POJO (Plain Old Java Object). A POJO domain model is
easier to put together, quick to build, can run and test outside of
an EJB container, and isn't dependent on EJB (maybe that's
why EJB vendors don't encourage you to use them.)"
Martin Fowler,
http://www.martinfowler.com/isa/domainModel.html