--- id: java-operators-precedence title: "Java Operators Precedence" category: "Programming_Language" status: "draft" verification_status: "conceptual" canonical_id: "" aliases: ["order of operations", "자바 연산자 우선순위"] 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", "operators", "precedence"] raw_sources: ["https://www.w3schools.com/java/java_operators_precedence.asp"] applied_in: [] github_commit: "" --- # [[Java Operators Precedence]] ## 🎯 한 줄 통찰 (One-line insight) Java's precedence order runs parentheses → multiplicative → additive → comparison → equality → logical AND → logical OR → assignment, and left-to-right evaluation applies when operators share the same precedence tier. [S1] ## 🧠 핵심 개념 (Core concepts) - **Precedence order (high → low)** — `()` → `*`/`/`/`%` → `+`/`-` → comparisons (`>`,`<`,`>=`,`<=`) → equality (`==`,`!=`) → `&&` → `||` → `=`. [S1] - **Parentheses always win** — used to force a specific evaluation order. [S1] - **Left-to-right for equal precedence** — e.g. subtraction and addition evaluate left to right without parentheses. [S1] ## 📖 세부 내용 (Details) - Multiplication before addition: `int result1 = 2 + 3 * 4; // 14` vs. `int result2 = (2 + 3) * 4; // 20`. [S1] - Left-to-right on equal precedence: `int result1 = 10 - 2 + 5; // (10-2)+5 = 13` vs. `int result2 = 10 - (2 + 5); // 10-7 = 3`. [S1] ## ⚖️ 모순 및 업데이트 (Contradictions & updates) 소스에서 모순되는 정보는 발견되지 않음. ## 🛠️ 적용 사례 (Applied in summary) 현재 발견된 실제 적용 사례가 없습니다 — 복합 표현식의 평가 순서를 예측해야 할 때 항상 참조하는 표다. [S1] ## 💻 코드 패턴 (Code patterns) Parentheses override default precedence (Java): ```java int result1 = 2 + 3 * 4; // 14 (multiplication first) int result2 = (2 + 3) * 4; // 20 (parentheses force addition first) ``` ## ✅ 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 Operators Arithmetic]], [[Java Operators Logical]] - **참조 맥락:** 모든 연산자를 종합한 우선순위 표 — 복합 표현식 평가 순서 확인용. ## 📚 출처 (Sources) - [S1] W3Schools — Java Operator Precedence — https://www.w3schools.com/java/java_operators_precedence.asp ## 📝 변경 이력 (Change history) - 2026-07-04: Initial draft synthesized from the W3Schools "Java Operator Precedence" page (Astra wiki-curation, P-Reinforce v3.1 format).