Oh~~ Learning the Advanced Part 1 and 2 really took a long time... Learning the Java syntax itself wasn't that difficult, but getting used to the part of controlling and utilizing things like threads or networks with the Java language wasn't easy 😊😊 Up to the intermediate course, the joy coming from learning itself rather than applying it was greater, but from the advanced course, it was really difficult, but there's a thrill that when you write code, it becomes a practical program. Feeling it again, Instructor Kim Young-han's teaching style of understanding the principles first and building upon them is really excellent.