JUnit

JUnit is a widely-used open-source testing framework for Java, designed to support test-driven development (TDD) and ensure code quality. It provides annotations to identify test methods, setup and teardown processes, and test runners to execute tests and report results. JUnit simplifies the process of writing and running repeatable tests, offering features like assertions to check expected outcomes, parameterized tests for varying inputs, and integration with build tools like Maven and Gradle. Its structured approach to testing allows developers to detect and fix bugs early in the development cycle, promoting robust and reliable code. By facilitating automated unit testing, JUnit enhances productivity, encourages best practices, and supports the continuous integration and deployment of Java applications.