I started with wild type and completed the basics after watching Utilization 1. This lecture uses maven instead of gradle and the h2 usage has also changed, so I was a little lost at the beginning of the lecture, but I was able to solve it without difficulty because the community bulletin board and PDF showed how to solve it. This lecture explained JPA in detail and explained in detail what is used in practice and how to use it, so it was very helpful. Now that I have finished the lecture, I will review it and watch Utilization 1 again to study. Thank you for the great lecture. ^^