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.
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+---
+id: java-while-loop
+title: "Java While Loop"
+category: "Programming_Language"
+status: "draft"
+verification_status: "conceptual"
+canonical_id: ""
+aliases: ["while loop", "자바 while 반복문"]
+duplicate_of: ""
+source_trust_level: "B"
+confidence_score: 0.9
+created_at: 2026-07-04
+updated_at: 2026-07-04
+review_reason: ""
+merge_history: []
+tags: ["java", "programming", "w3schools", "loops", "while"]
+raw_sources: ["https://www.w3schools.com/java/java_while_loop.asp"]
+applied_in: []
+github_commit: ""
+---
+
+# [[Java While Loop]]
+
+## 🎯 한 줄 통찰 (One-line insight)
+A while loop's condition is checked BEFORE each iteration, so a condition that's false from the start means the loop body never runs even once — a property the source contrasts against the (not-yet-covered) do/while loop's guaranteed-first-run behavior. [S1]
+
+## 🧠 핵심 개념 (Core concepts)
+- **`while (condition) { ... }`** — repeats the block as long as the condition stays true. [S1]
+- **Counter variable `i`** — conventional name meaning "index"/"iterator"; short and traditional. [S1]
+- **Must update the condition variable** — forgetting `i++` causes an infinite loop. [S1]
+- **Countdown pattern** — decrementing (`countdown--`) works the same way. [S1]
+- **False-from-start behavior** — if the condition is false initially, the loop body never executes. [S1]
+
+## 📖 세부 내용 (Details)
+- Basic counting: `int i = 0; while (i < 5) { System.out.println(i); i++; }`. [S1]
+- Countdown: `int countdown = 3; while (countdown > 0) { System.out.println(countdown); countdown--; } System.out.println("Happy New Year!!");`. [S1]
+- Never runs: `int i = 10; while (i < 5) { System.out.println("This will never be printed"); i++; }`. [S1]
+
+## ⚖️ 모순 및 업데이트 (Contradictions & updates)
+소스에서 모순되는 정보는 발견되지 않음.
+
+## 🛠️ 적용 사례 (Applied in summary)
+현재 발견된 실제 적용 사례가 없습니다 — 카운트다운, 조건 기반 반복의 기본형이며 do/while과의 차이가 다음 챕터의 핵심 주제다. [S1]
+
+## 💻 코드 패턴 (Code patterns)
+Basic while loop with counter (Java):
+```java
+int i = 0;
+while (i < 5) {
+    System.out.println(i);
+    i++;
+}
+```
+
+## ✅ 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)
+- **상위/루트:** [[Java Tutorial]]
+- **관련 개념:** [[Java Do While Loop]], [[Java While Loop Real Life]], [[Java For Loop]]
+- **참조 맥락:** 조건 기반 반복의 기본형 — do/while과의 실행 시점 차이가 핵심 대비점.
+
+## 📚 출처 (Sources)
+- [S1] W3Schools — Java While Loop — https://www.w3schools.com/java/java_while_loop.asp
+
+## 📝 변경 이력 (Change history)
+- 2026-07-04: Initial draft synthesized from the W3Schools "Java While Loop" page (Astra wiki-curation, P-Reinforce v3.1 format).