Web Reference: JUnit is a unit testing framework for Java programming language. JUnit has been important in the development of test-driven development, and is one of a family of unit testing frameworks collectively known as xUnit, that originated with JUnit. JUnit is a perfect unit test framework for Java programming language. A formal written unit test case is characterized by a known input and an expected output, which is worked out before the test is executed. The known input should test a precondition and the expected output should test a post-condition. Let us now have a basic example to demonstrate the step-by-step process of using JUnit. Create a java class to be tested, say, MessageUtil.java in C:\\>JUNIT_WORKSPACE Create a java class file name TestJunit.java in C:\\>JUNIT_WORKSPACE.
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