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GoF Design Patterns - Complete Course with Java Examples (Udemy.com)

Software Design Patterns in OOP with Java examples. Architecture principles and clean code design in OOP applications

Created by: Andrii Piatakha

Last updated November 2025

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What you will learn

  • 23 GoF Design patterns
  • Creational patterns
  • Behavioral patterns
  • Structural patterns
  • Source code examples of each pattern in Java
  • Understanding the issue that each pattern supposed to solve
  • Checklist for implementation of each pattern

How it compares

Against the other 518 rated Udemy courses in Software Development on CourseDuck:

  • Rating4.5 out of 5higher than 41% of them
  • Reviews621#198 of 519 by number of reviews
  • Length3.6 hoursshorter than 73% of them
  • Last updatedNovember 2025more recently than 51% of them

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Course Description

From this course, you can learn GoF Design Patterns with detailed Java examples.

There are a lot of other courses on this topic. So, why would you choose exactly this course?  Here are just a few reasons:

- Coding examples

To learn to program is not enough just watching videos and reading books. You also need to have a lot of practice. In this training course, you will review multiple practical tasks and coding examples which will help you learn and understand Java better.


- Open source code

We hide nothing from our students! Including the source code for the home task solutions and source code of examples that were shared during the lesson. Having the source code you can just copy and paste it to run it on your local computer to understand how things work better.

You are allowed to use all source code examples for learning purposes. This helps significantly to configure the environment and make tests work, especially in case students didn't work with any testing framework in the past.

- Q&A support 

The significant difference between the online and offline learning process is the instructor's availability. If you are in one room with a tutor he always can help you to get understand the specific concept or to help fix your code on your computer.
In this course, we are supporting students with answers to any questions flagged in the Q&A section. In case there will be recurring questions - separate video lessons will be created to show how to address the issue.

So with this course you are not just getting video materials, code exercises, source code, access to the free mobile application without limits (which is still pretty cool, huh? :) ), but you also get tutor support and answers to your questions along with this course.

- Relevant knowledge

After our team investigated other Java courses on Udemy we realized that most of them have nothing in common with real life. The information which is shared there is very old and significantly out of date. For example, the instructor teaches a framework which is not been used already for 15 years. Or instructors do stress on the programming design which is not used anymore at all!

The instructor of this course is a consultant in a top-rated IT outsourcing company and helps to bring cutting-edge solutions in IT for all his clients. Feel free to check the LinkedIn page of the instructor and check skills endorsement. More than 19 thousand people across all over the world (BTW most of them are from the top 100 companies of the world) evaluated the skills of Andrii Piatakha.

With this course, you can be sure that you will spend your time learning the right things from one of the best IT consultants in the world.

- Free mobile App without limits for our students

Knowing Java is one skill. Be able to pass interviews in the company - that is another skill :) Nowadays a lot of companies use tests to select candidates on the first level of interview. We developed applications to practice skills specifically for such purposes.

In this course, we will provide you link to download our FREE mobile app for android. (soon it will be also available for iOS platforms)

The instructor of this course comes up with hundreds of tests that are used to test the knowledge of candidates. With this application, you will be well-prepared for the interview.

Also, only for our students - there is no limit on attempts to pass certification. In the course, we will tell you how to set up a special bonus code that will remove restrictions for our students inside the app.

- High concentration of useful material in each lesson

Sometimes you can notice that watching 5 minutes of our lesson is equivalent to watching another 30 minutes lesson.

This is because time spent for preparation for the lesson (script for the lesson, lesson structure) and video editing (to cut boring pieces of the lesson or time when the program loads) sometimes 10 times as much (sometimes even 20) as the final lesson duration after video editing.

Also, each topic is separated from another. In case some concept will be explained in the next lesson and you don't need to worry about understanding this in the scope of this lesson - the instructor will make an announcement when a specific topic will be covered.

Go and try it yourself! We will appreciate your feedback.



So don't wait! Take a look at the lessons' preview if you still have doubts!

Buy this course today, and you will get all updates for FREE!

For those who successfully passed this training course, or for students who were recognized for asking amazing questions, there is a special offer from the IT-Bulls company! The creator of this course is IT-Bulls company CEO and Founder. We are always in search of talents to run our amazing startups together with you. Probably you always dreamed about running your startup? In this course, you will be able to find the team who will teach you how to do that and (in particular cases) will be glad to help with implementation!

Hope you enjoy this course! And remember, we appreciate all your feedback! Your feedback will help us to become even better! Your feedback will help us to create to best Java course ever!

See you at the lessons! :)



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Instructor Details

Andrii Piatakha

Andrii Piatakha is a highly experienced educator, entrepreneur, project manager and software engineer with over 10 years of teaching experience and a proven track record of empowering students worldwide to achieve their goals in IT. As the Founder and CEO of IT-Bulls, Andrii has dedicated his career to promoting engineering excellence and shaping the next generation of IT professionals.


=== What Sets Andrii Apart? ===

Unparalleled Expertise
Andrii's career spans over a decade, during which he has mentored thousands of students and professionals. His hands-on experience as a software engineer and business leader allows him to deliver courses that are both practical and impactful. Andrii specializes in teaching Java, software architecture, cybersecurity, project management, web and application development, and more.

Transformative Education
Through his highly popular course “Java from Zero to First Job”, Andrii has helped countless individuals with no prior programming experience secure their first jobs in IT. This course is renowned for its structured approach, real-world projects, and ability to prepare students for success in the shortest possible time.

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Reviews

4.5

621 ratings on Udemy

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By Nicholas Lum on 9/14/2026

Thorough course with helpful code examples. It was a little challenging to understand the instructor sometimes, but the content was informative.

By Milan Granát on 1/8/2026

This course is well structured, all pattern explained quite well. The only cons are minor, like slightly bad pronounciation of english words. It's a good course.

By Dineshkumar S R on 5/29/2025

Yeah it Good But instead of sharing the Existing kindly give live demonstration so that it will be like an interactive Session other everything is good for me.

By ChandraKumar Kalaimani on 1/24/2025

Yes, this course was matching to my job. It was effective and very useful to revisit my previous learnings as well.

By Rahul Rathore on 4/23/2024

This course has really helped me understanding Design patterns to its depth. Thank you for the wonderful course and will definitely follow and look out for your other videos.

By Prakash Pangeni on 1/2/2024

The tutor knows what to deliver and he did his job amazingly well ! All the best and eagerly waiting for your next series :)

By Joel Lapointe on 1/9/2023

Content is good and relevant but nothing you cannot find for free on the internet. The presenter english was also hard to understand. I had to re-listen to many sections. Also, there's no exercises / exams. The content on github are already completed examples. So if you want to practice, you either re-copy manually the code (Which is not a good way to learn btw). You can also design an exercise of your own, then code it. The course would be improved if it had exercises to complete. If you're really motivated to learn about design patterns (as you should) I suggest you do a quick search on google and read about them, then practice. Save your money or buy the course in a sale... Edit: Edited the review to be more clear and less harsh.

By Andres Felipe Quintero Escobar on 7/22/2022

The explanations are shallow because doesn't explain advantages or disadvantages of the pattern, examples not necessarily match exactly with the pattern's diagram. The list of patterns is good and the explanation is good.

By Helen Ma on 12/7/2021

The good things about this course are the nice code examples and covering all the GoF design patterns. It will be better to split a section into smaller lessons based on each pattern. It will be better to add more slides instead of just talking.

By Yong Kwang Goh on 9/13/2021

Quality of the course is surprisingly good. Clear explanations, beautifully illustrated lecture slides, concise demos and ending with a summary recap for each section. Brilliant! I have taken other design pattern courses and none is as good as this. An excellent choice.

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Read all 621 reviews on Udemy

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Overall Score : 90 / 100