I heard that the introductory course for Spring was good, so I took the introductory course for Java right away. It was so good that you explained it from the principles! After finishing the academy, I felt like I didn't have a proper foundation in Java or Spring, so I was at a loss, but I think I should take the Spring course too. The Java course was so good that I don't think I can not take the Spring course,,,ㅎㅎ Also, when it came to JDK or IDE installation, I felt scared and stiff, but I was so happy that you covered that part too!! Thank you for opening a rich and fun course~!