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71 lines
2.9 KiB
Markdown
71 lines
2.9 KiB
Markdown
---
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id: java-booleans
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title: "Java Booleans"
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category: "Programming_Language"
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status: "draft"
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verification_status: "conceptual"
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canonical_id: ""
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aliases: ["boolean expressions", "자바 불리언"]
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duplicate_of: ""
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source_trust_level: "B"
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confidence_score: 0.9
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created_at: 2026-07-04
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updated_at: 2026-07-04
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review_reason: ""
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merge_history: []
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tags: ["java", "programming", "w3schools", "boolean", "expressions"]
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raw_sources: ["https://www.w3schools.com/java/java_booleans.asp"]
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applied_in: []
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github_commit: ""
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---
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# [[Java Booleans]]
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## 🎯 한 줄 통찰 (One-line insight)
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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]
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## 🧠 핵심 개념 (Core concepts)
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- **`boolean`** — named after George Boole; stores true/false. [S1]
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- **Boolean expression** — a comparison that evaluates to true or false, used to build program logic. [S1]
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- **Storing the result** — `boolean isGreater = x > y;` captures a comparison's outcome in a named variable. [S1]
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- **Trade-off** — storing vs. inline comparison is a readability/reuse choice, not a technical requirement. [S1]
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## 📖 세부 내용 (Details)
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- Direct comparison: `int x = 10; int y = 9; System.out.println(x > y); // true`. [S1]
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- Literal comparison: `System.out.println(10 > 9); // true`. [S1]
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- Equality check: `int x = 10; System.out.println(x == 10); // true`. [S1]
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- Stored result: `boolean isGreater = x > y; System.out.println(isGreater);`. [S1]
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## ⚖️ 모순 및 업데이트 (Contradictions & updates)
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소스에서 모순되는 정보는 발견되지 않음.
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## 🛠️ 적용 사례 (Applied in summary)
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현재 발견된 실제 적용 사례가 없습니다 — 이후 If...Else 챕터에서 이 boolean 표현식이 조건 분기의 기반이 된다. [S1]
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## 💻 코드 패턴 (Code patterns)
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Storing a comparison result (Java):
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```java
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int x = 10;
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int y = 9;
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boolean isGreater = x > y;
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System.out.println(isGreater); // true
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```
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## ✅ 검증 상태 및 신뢰도
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- **상태:** draft
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- **검증 단계:** conceptual
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- **출처 신뢰도:** B (W3Schools — widely used educational reference, not a primary standards body)
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- **신뢰 점수:** 0.90
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- **중복 검사 결과:** 신규 생성 (New discovery)
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## 🔗 지식 그래프 (Knowledge Graph)
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- **상위/루트:** [[Java Tutorial]]
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- **관련 개념:** [[Java Booleans Type]], [[Java Operators Comparison]], [[Java If Else]]
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- **참조 맥락:** 모든 조건문/비교 연산의 기초 — If...Else 챕터로 직접 이어진다.
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## 📚 출처 (Sources)
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- [S1] W3Schools — Java Booleans — https://www.w3schools.com/java/java_booleans.asp
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## 📝 변경 이력 (Change history)
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- 2026-07-04: Initial draft synthesized from the W3Schools "Java Booleans" page (Astra wiki-curation, P-Reinforce v3.1 format).
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