The lecture quality is not satisfactory. There are many aspects that make me feel it's insufficient to recommend. Reasons for not recommending: 1. Suddenly uses IntelliJ, but there's no explanation about how to set it up, download it, etc. 2. The same applies to suddenly using DataGrip - Even worse, both of these tools are paid. There's no explanation about this Lack of explanation on what to set up and how when using free alternatives 3. Following the lectures in order doesn't work later on Reason: Created entities according to the initial design, but suddenly the entity items change 😆😆😆 There are even JAVA files that were never created during the lecture. 4. Moves on without any explanation about problem solving You need to be careful about these issues when taking this course. If you don't have the ability to solve errors on your own, you'll waste a tremendous amount of time