I studied Java Basics and Exception Handling/Generics/Java Collections separately and took the Spring Introduction course, but it was still very difficult. Since it was my first time listening to it, I was busy following the code, but... But the teacher told me to just listen comfortably, so... It was comforting^^; I think I understand the flow, so that's a relief. I'll study hard according to the remaining roadmap and participate in the project! Thank you for this lecture!