I've been a huge fan of Suwon since taking the Spring Security course. During a group study, there was a suggestion to gain a deeper understanding of Java concurrency, and without hesitation, I recommended Suwon's lecture, and everyone was satisfied. The way he makes numerous theories easy to understand through flowcharts, and the detail of explaining by setting debugging breakpoints for each section is legendary every time I see it. I'm looking forward to the next lecture and Spring Batch! Thank you for always providing great lectures.