This is the first jsp bulletin board I've built. Security aspects were also explained, and since I'm a beginner, I tried to follow along by looking at the file document once and rewrite it while thinking about it without looking at it when writing the actual code. At the same time, I studied while understanding the overall process. I encountered an error, but I completed it by searching and finding the content in the Q&A. I'm so happy. ㅎㅎ The lecture content is rich and good.!!