Why are you disappointed or saying it's difficult when you can take such a great lecture for free? If you don't know how to use the editor and don't know what Gradle and Maven are, how is that different from coming to learn the multiplication table and not knowing the numbers? When you come across difficult content, you should try to understand and learn the difficulty. If you whine about it being difficult, what difference will it make? I recommend those who gave you 1 point to quit coding and go learn welding.