Files
2nd/10_Wiki/Topic_Programming/Topic_Java/Java_Identifiers.md
T
Antigravity Agent e9cbf23ab5 docs(10_Wiki): Dev 폴더 누락분 반영 — Topic_Programming으로 통합
이전 재구성 작업에서 Dev/ 폴더가 누락되었던 것을 반영.

- Dev/Topic_Programming(중첩 폴더, 78개)은 Dev 자체 최상위 폴더들
  (Architecture/Conventions/Engineering_Intelligence 등)과 완전 중복이라 제거.
- Dev 최상위 엔지니어링 지식 폴더(Architecture/Conventions/Engineering_Intelligence/
  Failure_Library/Generalized_Principles/Language/Pattern_Catalog/Platform_Guides/
  Subsystems, 77개)는 이미 Topic_Programming/Topic_Programming에 더 최신 버전이
  존재해 중복 제거(고유 콘텐츠 1개는 예외 처리하여 이동 보존).
- Dev의 W3Schools 언어 튜토리얼 폴더(Topic_C/CPP/CSS/CSharp/HOWTO/HTML/Java/
  JavaScript/PHP/Python/SQL/W3CSS, 1201개)는 전부 Topic_Programming 하위로 이동.
- 에이전트 운영 상태(.astra/docs)는 그대로 유지, 콘텐츠 폴더만 정리.
- Topic_Programming 최종 문서 수: 2784 → 3985.
2026-07-05 00:39:13 +09:00

2.9 KiB

id, title, category, status, verification_status, canonical_id, aliases, duplicate_of, source_trust_level, confidence_score, created_at, updated_at, review_reason, merge_history, tags, raw_sources, applied_in, github_commit
id title category status verification_status canonical_id aliases duplicate_of source_trust_level confidence_score created_at updated_at review_reason merge_history tags raw_sources applied_in github_commit
java-identifiers Java Identifiers Programming_Language draft conceptual
자바 식별자
B 0.9 2026-07-04 2026-07-04
java
programming
w3schools
identifiers
naming
https://www.w3schools.com/java/java_variables_identifiers.asp

Java Identifiers

🎯 한 줄 통찰 (One-line insight)

A valid Java identifier must start with a letter, $, or _ (never a digit), contain no spaces, avoid reserved keywords, and is case-sensitive — with descriptive names strongly favored over terse ones for maintainability. [S1]

🧠 핵심 개념 (Core concepts)

  • Identifier — the unique name for a variable. [S1]
  • Naming rules — letters, digits, underscores, $ allowed; must begin with a letter (or $/_); no whitespace; case-sensitive; cannot be a reserved keyword. [S1]
  • Convention — start with lowercase; descriptive names recommended for readability. [S1]
  • Invalid examples2ndNumber (starts with digit), my var (contains space), int (reserved keyword used as name). [S1]

📖 세부 내용 (Details)

  • Good vs. terse naming: int minutesPerHour = 60; (clear) vs. int m = 60; (works, less clear). [S1]
  • Invalid identifiers: int 2ndNumber = 5;, int my var = 10;, int int = 20; — all raise errors. [S1]

⚖️ 모순 및 업데이트 (Contradictions & updates)

소스에서 모순되는 정보는 발견되지 않음.

🛠️ 적용 사례 (Applied in summary)

현재 발견된 실제 적용 사례가 없습니다 — Python Variable Names 챕터와 동일한 규칙 구조(문자/숫자 시작 제약, 대소문자 구분, 예약어 금지)를 공유한다. [S1]

💻 코드 패턴 (Code patterns)

Descriptive vs. terse naming (Java):

int minutesPerHour = 60;  // Good: clear intent
int m = 60;               // OK, but less clear

검증 상태 및 신뢰도

  • 상태: draft
  • 검증 단계: conceptual
  • 출처 신뢰도: B (W3Schools — widely used educational reference, not a primary standards body)
  • 신뢰 점수: 0.90
  • 중복 검사 결과: 신규 생성 (New discovery)

🔗 지식 그래프 (Knowledge Graph)

📚 출처 (Sources)

📝 변경 이력 (Change history)

  • 2026-07-04: Initial draft synthesized from the W3Schools "Java Identifiers" page (Astra wiki-curation, P-Reinforce v3.1 format).