JUnit is a [unit testing] harness for Java.  It was created as simple platform for programmers to do [unit testing] in the [Extreme Programming] way.

* [How to construct a JUnit testcase]
* [External class problem in JUnit]

!Other useful links

* [JUnit web page|http://www.junit.org]
* [JUnit introduction in German|http://www.frankwestphal.de/UnitTestingmitJUnit.html]
* [JUnit 4 introduced, with useful links (in German)|http://www.junit-buch.de/news/junit4_1.html]