JUnit is a Java framework for unit testing. The benefits of using JUnit, rather than implementing unit tests on your own code, can be summarized as follows:
JUnit is the foundation for more specialized unit-testing tools, such as Cactus, mocks, JMeter, Jester, JUnitPerf, DbUnit, and HttpUnit.
JUnit can be found at http://www.junit.org, along with sample usages and documentation.
New releases of JUnit support annotation-based unit tests. Therefore, we can develop unit test in a different style of old releases ...