There is an object-oriented programming class at school, but the progress is too fast and I don't understand it, so I took it! I think it's a really big advantage that there is a practice session every hour. I think it's easy to get used to it quickly! Those who have studied the basics in another language can finish the course in two days, and you'll also get used to the Java language a bit.ㅎㅎ It's really much better than school classes~!!