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Practical Java Unit Testing with JUnit 5 and JUnit 6
Rating: 4.5 out of 5(8,524 ratings)
31,700 students

Practical Java Unit Testing with JUnit 5 and JUnit 6

Learn practical Java Unit Testing with JUnit 5/6 in 1 hour. Includes IntelliJ IDEA license, exercises, and a cheatsheet.
Created byAdrian Wiech
Last updated 4/2026
English

What you'll learn

  • Write awesome unit tests in JUnit 5
  • Create practical, real-world test scenarios
  • Follow unit testing best practices
  • Run unit tests in Eclipse (or IntelliJ IDEA)
  • Learn basic Test Driven Development (TDD)

Course content

5 sections32 lectures1h 17m total length
  • Introduction1:42

    Learn about the course, its author and his motivations.

  • Unit testing theory3:17

    Learn the essential theory of unit testing in just a few minutes.

  • Getting ready for the course2:29

    Make sure you have the IDE and project files ready.

  • Choose Eclipse or IntelliJ IDEA (free license included)0:41

Requirements

  • You are eager to learn unit testing! :)
  • You have some experience with Java
  • You have the free Eclipse IDE (or IntelliJ IDEA)

Description

Note: All students of this course receive a 6-month license for IntelliJ IDEA Ultimate — the industry-leading Java IDE trusted by professionals worldwide.


Hello! My name's Adrian and I'm a professional Java Developer. You've just found the highest rated course about JUnit on Udemy! Here are some examples chosen from the hundreds of reviews :

• "superb and very compact, the course got me started in just two hours"
• "excellent, well-explained, with real-word examples"
• "perfect for beginners! I feel like: oh, it's so easy!"

According to statistics, nearly 80% of all Java developers write unit tests with JUnit, and my developing practice proves it. Unit testing is so important because it increases the quality of your code. It is a basic skill required by most employees, so for any Java Developer professional career, you have to master JUnit. You'll only learn the practical aspects of unit testing with JUnit 5 – the latest version of the most popular Java unit testing framework.

I’ll introduce only the essential theory behind unit testing, and then dive straight into the code to get you started as quickly as possible. I’ll use an example of a simple, yet practical Java project to show you a variety of unit test types. You'll also learn the best practices and coding standards for unit tests based on my developing experience. You can get started in just a few hours. This course also comes with additional exercises and a one-page cheat sheet for a quick JUnit 5/6 reference.


COURSE ADVANTAGES

concise – my short video lectures focused on the most important info help you save time and learn maximally effectively

based on practice – instead of useless academic theory, you learn the best developing practices drawn from my work experience

reasonably priced – compared to stationary developer bootcamps, the course is much cheaper, so you save not only time but also money

available anywhere, anytime – the online form lets you run the course in the most convenient place (at home, work or in a café) and time (while commuting by metro or relaxing at home after work), so you can adjust it to your agenda

accessible on desktop, mobile and TV – you can display my lectures on the device of your choice, so you don’t have to stick to your PC

certificate of completion – after completing the course, you will receive a printable certificate that will make your resume more attractive


Intro video music courtesy of Bensound

Who this course is for:

  • You know basic Java and want to learn unit testing from zero
  • You want to prepare for your first Java job
  • You want to increase the quality of your code
  • You want to refresh your knowledge if you already know JUnit 4