Top 8 Best JUnit Courses (Online)

David Brown (Senior Developer) Updated December 10, 2023
Top 8 Best JUnit Courses (Online)

JUnit Courses for Beginners

1. Testing Java with JUnit 5 & Mockito

4.8/5 (753 students) Read the reviews
Sergey Kargopolov Online course by Sergey Kargopolov certification icon Certification available

This video course is designed to teach beginners the fundamentals of unit and integration testing with Java using JUnit 5 and Mockito framework. Topics covered include creating projects, configuring JUnit 5 support, creating and running tests, assertions, lifecycle methods, and more. By the end of the course, students will have a comprehensive understanding of unit and integration testing and be able to apply it in their own projects.

2. JUnit and Mockito Crash Course

4.4/5 (17719 students) Read the reviews
Bharath Thippireddy Online course by Bharath Thippireddy certification icon Certification available

This course is perfect for any java developer who wants to become an expert in Unit Testing. It covers JUnit and Mockito, two of the most popular unit testing technologies, and teaches how to write real unit tests and run them as a part of a Maven build. It also covers syntax of JUnit 4 and 5, mocking, test coverage and how to measure it. It offers 2 hours of lectures with concepts and step by step implementations to simplify the process.

3. Practical Java Unit Testing with JUnit 5

4.6/5 (12852 students) Read the reviews
Adrian Więch Online course by Adrian Więch certification icon Certification available

This course provides an introduction to JUnit, the most popular Java unit testing framework. It is designed to help Java developers quickly learn the essentials of unit testing and best practices, with practical examples and real-world experience. It is concise and reasonably priced, and can be taken anywhere, anytime. Upon completion, a printable certificate is provided.

4. Practical Junit & Mockito Test with Java SpringBoot & JPA

4.3/5 (7079 students) Read the reviews
Ranjan Pandey Online course by Ranjan Pandey certification icon Certification available

This course will teach students about unit testing, Test Driven Development, Junit, and Mockito. Students will learn to develop real-world applications using different technology stacks, such as Java, Spring, SpringBoot, Hibernate, Spring Data JPA, and Restful webservices. Topics include design patterns, layered architecture, ORM, Junit and Mockito annotations, code coverage and debugging, and more. Students will also receive the complete source code used in the course.

Advanced JUnit courses

1. Automation Testing Using Junit

3.9/5 (1285 students) Read the reviews
Rahul Singh Rathore Online course by Rahul Singh Rathore certification icon Certification available

This course teaches attendees how to use JUnit for the Java programming language, in their daily life of any project unit testing. It covers topics such as setting up the environment, reading test data from databases and CSV files, running batch executions, integration with Ant build tool, integrating and executing Junit from Jenkins, and running Junit with Eclipse plugin. Source code is provided as part of the video lecture.

2. Junit 5 Jupiter Under JDK 16 In Details Step by Step

4.6/5 (192 students) Read the reviews
Alexander Wong Online course by Alexander Wong certification icon Certification available

This course offers a comprehensive overview of the JUnit 5 framework, including the basics, advanced usage, and integration with other testing tools. Topics covered include quality engineering process, standard test case and lifecycle, JUnit 4 and 5, Jupiter assertion statement, test instance lifecycle, Jupiter extensions, assumptions, integration of other assertion frameworks, condition execution, dynamic tests and containers, test sources, parameterized tests, and integration with frameworks like Mockito, Powermock, Selenium, and Cucumber. It also covers migration from JUnit 4 to JUnit 5. Video captions are available.

Free JUnit tutorials

1. JUnit 5 Quick Start: Java Unit Testing

4.4/5 (7409 students) Read the reviews
Craig Hawkins Online course by Craig Hawkins

This course provides an introduction to JUnit Java unit testing for beginners. It will cover imports, annotations, test output, best practices and demonstrate applications. The instructor is an Ivy League graduate with industry experience. No prior knowledge is necessary.

2. Master JUnit 5 for Java developers

4.6/5 (1658 students) Read the reviews
Code Caffeine Online course by Code Caffeine

This free course is designed for Java developers who wish to learn JUnit5, the latest version of the widely used unit testing framework. Students will learn the basic architecture of JUnit5 and its various lifecycle annotations, as well as how to use assertions to test for equality, null, and exceptions. Test cases using @RepeatedTest, @ParameterizedTest, and @ConditionalTest will also be taught, in addition to learning how to group various tests using @Nested and @Suite annotations.

Are you looking to expand your knowledge of software development and testing? JUnit is one of the most popular frameworks for testing Java programs.

Let’s explore why learning JUnit is essential for software engineers and its advantages over other testing frameworks.

Learning JUnit Online: A Student’s Guide

Introduction to JUnit

JUnit is an open-source unit testing framework for the Java programming language. Unit testing is software testing where individual units of source code, such as functions, classes, or methods, are tested to determine if they are appropriate for use.

JUnit was developed by Kent Beck and Erich Gamma and was released in 2002. JUnit is designed to help developers write and maintain unit tests quickly and effectively.

It has a simple and intuitive syntax, making it easy to learn and use. It also provides many features to help developers create robust unit tests, such as test fixture support, assertion methods, and test result reporting. JUnit tests can be run from within the IDE, a command line, or an Ant script.

This makes it simple to integrate unit tests into the development process and to ensure that tests are run regularly.

JUnit is also extensible, so it can be used to create more complex types of tests. It is popular for testing web applications, databases, and XML documents.

Using JUnit, developers can write repeatable tests that can be run whenever the code is modified. This ensures that the application will continue to work as expected and helps to reduce the amount of time spent debugging and fixing errors.

Alternatives to JUnit

For developers looking for an alternative to JUnit, here are some of the most popular alternatives:

  • TestNG: TestNG is an open-source testing framework that is similar to JUnit but offers additional features such as support for annotations, parameters, dependency testing, and more. – See TestNG Courses here.
  • Spock: Spock is an open-source testing and specification framework for Java and Groovy applications. It supports advanced features such as data-driven testing, mocks, and stubs.
  • Mockito: Mockito is a powerful mocking framework for Java. It can be used to create mock objects for unit testing easily.
  • Cucumber-JVM: Cucumber-JVM is a popular open-source BDD (Behaviour Driven Development) testing framework for Java. It supports features such as natural language scenarios, parametrization, and data-driven testing. – See Cucumber courses here.
  • Arquillian: Arquillian is an open-source testing platform that supports a variety of testing frameworks including JUnit, TestNG, and other popular testing tools.
  • JMockit: JMockit is an open-source mocking framework for Java. It is used to create mock objects easily for unit testing.
  • Junit-Fx: Junit-Fx is an open-source framework for testing JavaFX applications. It supports features such as visual testing, event logging, and screen recording.

No matter what testing framework is chosen, developers should be sure to research and evaluate the features and benefits each offer.

It is also important to consider the complexity and cost associated with each framework before making a decision.

Ultimately, the decision should be based on the needs of the project, the team, and the application.

JUnit learning resources

Frequently Asked Questions

Is JUnit difficult to learn?

No, JUnit is not difficult to learn. It is an open-source testing framework for the Java programming language that makes it easy to write and run repeatable tests. Its intuitive structure, format, and usability make it relatively straightforward to learn and use. With the help of a few tutorials and some practice, anyone can become proficient in the basics of JUnit.

What is JUnit used for?

JUnit is an open-source testing framework for the Java programming language. It is a popular tool for unit testing, which is a type of software testing where individual units or components of software are tested to ensure that each individual unit works as intended. JUnit helps to automate unit testing so that developers can quickly test their code and find any potential bugs before releasing their software. JUnit can also create regression tests to ensure new features do not break existing code.

Is JUnit easy to learn?

JUnit is an open-source unit testing framework for Java and is very easy to learn. It is well-documented with tutorials and examples available online, and its simple API makes it a great choice for beginners. JUnit can make unit testing easier and faster and is supported by several popular IDEs and build tools. With its robust feature set and intuitive syntax, JUnit can be quickly picked up by developers of all levels of experience.

Is JUnit the same as TestNG?

No, JUnit and TestNG are not the same. JUnit is a unit testing framework for the Java programming language, while TestNG is more comprehensive and supports all types of testing, including unit testing. TestNG is a more powerful and feature-rich framework than JUnit, but JUnit is still a popular choice for unit testing in Java.

What is Mockito?

Mockito is an open-source Java-based library that enables developers to create mock objects for unit testing. Mock objects are essentially simulated objects that mimic the behavior of real objects in controlled ways. Mockito enables developers to create mock objects with behavior, state, and expectations, allowing them to create tests for their code easily, and ensure the code functions as expected.


In conclusion, learning JUnit online can be a great way to quickly acquire the skills necessary to become a proficient Java developer.

With the help of online tutorials, guides, and other resources, it is possible to quickly learn the fundamentals of JUnit and utilize the powerful testing framework to debug and optimize Java applications.

Furthermore, the open-source nature of JUnit makes it widely available and accessible to all aspiring Java developers, regardless of experience or budget.

David Brown
About the author

David is a self-taught senior developer who lives in San Diego. He has over 10 years of experience in the software development industry and has worked on a variety of projects. He has a passion for coding, and a keen interest in the latest online education technology.

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