I learned a lot. You explained it in detail. At first, I thought the content about object-oriented was really the best. I heard a lot that object-oriented was important whenever I searched, but I never really realized why it was important. Now I definitely understand why it is necessary. And I understand the basic concepts of Spring, but I still don't fully understand how to use it, so I plan to continue reviewing and understand it. It was really good because I was able to learn a lot of things in a fun way. In addition, I think it's a characteristic of students these days, but I also spend a lot of time thinking about what I should do in the future and searching, so it was really good that you specified the things I should do so that I don't waste that time. I will study hard about Spring as you told me and succeed in getting a job. Thank you!