This serves as a great practical application for object-oriented design. Thank you.

It's a masterpiece! This was the first time I've experienced a course where the message of every single lecture was so neatly organized that I could learn without any roadblocks. In the beginning, it seemed to be heading towards writing readable code. However, as I progressed, it became increasingly clear that readable code is more about maintainability than just legibility. I've had many concerns in my professional work about how to create better designs and write better code, and I feel like this course really helped me find the right direction! In particular, I loved the part about resolving polymorphism issues using overrides within enums during work.

This is a lecture where you can learn about how to write test code and TDD. I highly recommend it!

I always intended to use TDD for my projects, but I often ended up skipping it because I was pressed for time. This course was very helpful as it taught me the right mindset for testing and how to write better test code. Thank you!

It's time to wrap up the testing. Thank you.

I think I've gotten a general feel for testing.

Thank you. ^^

I chose this course because I had no knowledge about testing. Not only can you learn about testing, but you can also gain practical tips for each layer, and it's especially great that you can learn about Spring Rest Docs. But why is this course so fun..? lol As I moved through each chapter, I found myself wondering what innovative thing would come next, and it was so much fun watching and practicing on my own. Thank you for providing such a great course.

This was the best lecture I absolutely needed. Thank you so much for sharing this know-how so easily! Now I have a solid understanding of abstraction

This was a very helpful course for someone aspiring to be a backend developer. While studying development, you come across object-oriented programming, but as a learner, it was really difficult to know how to write code, what code is object-oriented, and what code is good for collaboration. In that regard, this course scratched those itchy spots for me. Of course, I think the content is difficult for aspiring developers (junior developers) to fully digest. However, I believe that the various refactoring techniques and mindset I learned from this course will gradually help me grow as I write code going forward. Thank you to the instructor for creating such a great course. Today is December 25th, and I hope everyone has a joyful Christmas and a happy end to the year. Thank you.