Starting from the MVC pattern related to DAO DTO, I searched for CRUD and bought a book and tried it. I didn't finish it all, but I thought I would finish it someday, and it took a long time, but it was well-organized and the lecture explained why this part should be used, why the result value is like that, and why the result value is explained there, so I gradually understood it. I understood why there are over 9,999 students. At first, I thought it would be the same pattern, but I felt that it was worth the money. It's hard to find reviews for most lectures, but it's great because it explains in detail and even the wrong parts are corrected by date. It's usually not good to correct the part and sometimes they are busy with other things and just upload the lecture and get paid, but I was worried that Infraon would receive money and the review results would be bad, but this is lower than other lectures. I'm currently working at a company, but... I couldn't adapt, so I kept listening to it as a recommendation from a regular employee, and I feel like it was a waste of money. When I saw other content, I felt frustrated and empty, and thought, "Am I doing well?" I saw other content from people who had already jumped into development, and then I saw Director Kim Young-han's help, and I thought, "Oh, but still, I'm so grateful that he teaches with passion, divides his time, and puts in the best effort from the past to the present." Of course, I didn't listen to it all at once and got it all, so I listened to Java 10 times... I got angry, despaired, and frustrated, and even dropped out of computer science in college... I thought that developers and I don't fit together... I thought I should just give up, but I'm so grateful to the person who recommended it to me, and I'll try my best to understand it and make my own project. I haven't tried hard enough... I feel like I'll give up my whole life if I don't try hard now, so I'm going to try to have a positive attitude and succeed at least with this. Thank you. It's really helpful. Is being a developer 1=1=0? If you don't understand this, I thought you should give up learning as a developer, but I thought that those who are passionate and work hard will be different, and that there is someone who can teach you the right mindset, so I think it's fortunate that there is one. The computer engineering college I went to... didn't know how to do it, so I had to do it with people who were good at it, but if you couldn't do it because your mindset was not good, they looked at you as a loser. I had to gradually look into other fields, so thank you. ^^ And while I was grateful, I thought the lectures would be the same, and that they would just follow the book without sincerity... I'm glad to know why you can see the present from the past, and I tried it because I thought it might be possible for free, but I didn't know that it was possible. I found out that there is a way to create an IntelliJ webapp directory and create an index html, or that JSP is unlikely to work, but there is a way to do it with Community IntelliJ. I'm watching the MVC1 lecture because it's paid with a company account, but I'm grateful that someone can show me the right direction. ^^