https://dublin-java.tistory.com/53
https://gyrfalcon.tistory.com/entry/Java-Reflection
https://velog.io/@ptm0304/Java-%EC%9E%90%EB%B0%94-%EB%A6%AC%ED%94%8C%EB%A0%89%EC%85%98
https://brunch.co.kr/@kd4/8
