Introduction to JUnit

JUnit is a widely used open-source testing framework for Java applications. It provides a simple and efficient way to write, run, and manage automated tests for Java code. JUnit tests are typically used to test individual units of code, such as classes or methods, to verify that they work as expected.

JUnit was first released in 1998 and has since become the de facto standard for Java unit testing. JUnit is easy to use and requires minimal setup, making it an ideal testing tool for developers of all skill levels. The framework provides a simple API for writing tests, as well as a set of annotations that make it easy to define test cases and test fixtures.

JUnit tests can be run from the command line, integrated into a build process, or executed from within an IDE. The framework provides detailed test results and failure reports, making it easy to identify and fix problems in your code. Additionally, JUnit integrates well with other testing and build tools, such as Maven and Gradle, making it a valuable tool for any Java development project.