# 메서드

- [아이템49 매개변수가 유효한지 검사하라](https://incheol-jung.gitbook.io/docs/study/effective-java/undefined-6/49.md): Effective Java 3e 아이템 49를 요약한 내용 입니다.
- [아이템50 적시에 방어적 본사본을 만들라](https://incheol-jung.gitbook.io/docs/study/effective-java/undefined-6/50.md): Effective Java 3e 아이템 50를 요약한 내용 입니다.
- [아이템53 가변인수는 신중히 사용하라](https://incheol-jung.gitbook.io/docs/study/effective-java/undefined-6/53.md): Effective Java 3e 아이템 53를 요약한 내용 입니다.
- [아이템 54 null이 아닌, 빈 컬렉션이나 배열을 반환하라](https://incheol-jung.gitbook.io/docs/study/effective-java/undefined-6/54-null.md): Effective Java 3e 아이템 54를 요약한 내용 입니다.
- [아이템56 공개된 API 요소에는 항상 문서화 주석을 작성하라](https://incheol-jung.gitbook.io/docs/study/effective-java/undefined-6/56-api.md): Effective Java 3e 아이템 56를 요약한 내용 입니다.


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