Take it easy with easyb

http://easyb.org/index.html

easyb is a behavior driven development framework for the Java
platform. By using a specification based Domain Specific Language,
easyb aims to enable executable, yet readable  documentation.
Behavior driven development?

Behavior driven development (or BDD) isn't anything new or
revolutionary-- it's just an evolutionary offshoot of test driven
development, in which the word test is replaced by the word should.
Semantics aside, a lot of people have found that the concept of should
is a much more natural development driver than the concept of testing.
In fact, when you think in terms of behavior (i.e. shoulds) you'll
find that writing specifications is easier to do first, which is the
intent of test driven development in the first place.