2nd/10_Wiki/Dev/Topic_Java/Java_Booleans.md

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-booleans	Java Booleans	Programming_Language	draft	conceptual		boolean expressions 자바 불리언		B	0.9	2026-07-04	2026-07-04			java programming w3schools boolean expressions	https://www.w3schools.com/java/java_booleans.asp

Java Booleans

🎯 한 줄 통찰 (One-line insight)

A boolean expression's result can be stored in a boolean variable instead of used inline — boolean isGreater = x > y; — trading a bit of verbosity for readability and reusability, an optional but common practice. [S1]

🧠 핵심 개념 (Core concepts)

• boolean — named after George Boole; stores true/false. [S1]
• Boolean expression — a comparison that evaluates to true or false, used to build program logic. [S1]
• Storing the result — boolean isGreater = x > y; captures a comparison's outcome in a named variable. [S1]
• Trade-off — storing vs. inline comparison is a readability/reuse choice, not a technical requirement. [S1]

📖 세부 내용 (Details)

• Direct comparison: int x = 10; int y = 9; System.out.println(x > y); // true. [S1]
• Literal comparison: System.out.println(10 > 9); // true. [S1]
• Equality check: int x = 10; System.out.println(x == 10); // true. [S1]
• Stored result: boolean isGreater = x > y; System.out.println(isGreater);. [S1]

⚖️ 모순 및 업데이트 (Contradictions & updates)

소스에서 모순되는 정보는 발견되지 않음.

🛠️ 적용 사례 (Applied in summary)

현재 발견된 실제 적용 사례가 없습니다 — 이후 If...Else 챕터에서 이 boolean 표현식이 조건 분기의 기반이 된다. [S1]

💻 코드 패턴 (Code patterns)

Storing a comparison result (Java):

int x = 10;
int y = 9;
boolean isGreater = x > y;
System.out.println(isGreater);  // true

✅ 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 Booleans Type, Java Operators Comparison, Java If Else
• 참조 맥락: 모든 조건문/비교 연산의 기초 — If...Else 챕터로 직접 이어진다.

📚 출처 (Sources)

• [S1] W3Schools — Java Booleans — https://www.w3schools.com/java/java_booleans.asp

📝 변경 이력 (Change history)

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