I haven't used Spring in my work yet, so I'm studying it separately, but for the first time since I learned Java, I feel like I have a proper understanding of object-oriented programming. Just by looking at it, I can tell that the instructor has a lot of development knowledge and excellent skills, and he teaches well, so I feel like my skills are improving just by following the class. In addition, I quickly got used to IntelliJ, which I used for the first time. Thank you for the great lecture!