Thanks to Younghan's lecture, Java has become fun! I keep listening because I'm looking forward to the next episode. ㅎㅎ The last part about polymorphism was a little difficult and confusing, but I'm going to review it again. When I listen to the lecture, there are often times when the instructors just skip over things that they think are obvious and make it hard to understand, but Younghan always goes over the basics, so it was better. In particular, the part where he summarizes at the end of each chapter was really good. I also think that this lecture perfectly reflects what beginners find difficult and how to explain it so that they can understand it. Even though it's definitely difficult, he explains it so well that I was able to follow along step by step. Thank you for recording such a high-quality lecture:)