남궁성님 깃허브

기초편
https://github.com/castello/javajungsuk_basic

3판
https://github.com/castello/javajungsuk3

정리 블로그

https://velog.io/@pjoon357/series/%EC%9E%90%EB%B0%94%EC%9D%98-%EC%A0%95%EC%84%9D