Mockito is a mocking framework for Java applications. It lets you write beautiful tests with a clean and simple API. Mockito tests are very readable and they produce clean verification errors. It's a simple Java library that is used for effective unit testing of Java applications. In this course, you will learn step by step, how to configure and use Mockito and JUnit testing frameworks. This course should help you learn how to create efficient unit tests with Mockito as well as how to use its APIs in a simple and intuitive way.