(Advantages) 1. Even non-majors can learn Java in a short period of time 2. Interfaces, lambda expressions, and streams are explained very easily. (Disadvantages) 1. Since the lecture time is short, I have to find a separate book to study detailed contents such as classes, inheritance, polymorphism, and interfaces. --> Honestly, I think it is natural because the lecture time is short. --> It would be perfect if it was supplemented with detailed contents in a PDF file, but the cost is too cheap, so I think it is too unscrupulous. (Conclusion) I have listened to the basics, so I would appreciate it if you could give me an advanced version.