I took the basic course after the introductory course. Since I took the course after reading the entire Java grammar book, it was not difficult to understand the overall content of the course. When studying while reading the book, I studied like, "There is this grammar, and it is used like this?" So I simply recognized the grammar provided by the Java language. After taking the basic course, I understood at least the grammar explained up to the basic course. In order to explain the constructor, the way it was explained was really helpful, first assigning it directly to an instance variable, then using a method, and then using a constructor, using and extending the concepts I had previously learned. Thanks to this method and the explanation of how objects are allocated to memory through pictures, I was able to easily understand inheritance, method overriding, and polymorphism. It was a really good course!!! I will review the remaining period of December and study the remaining Java grammar more, and follow the instructor's backend roadmap starting in January next year. So I am excited and scared. Honestly, I think the fear is bigger. I was able to understand the lectures so far by reading the book once, but I really don't know much about Spring. In addition, I feel like there is so much I need to know about data structures, algorithms, design patterns, etc. But I won't give up and will try to follow the roadmap well. I'll see you next time in the Spring lecture review.