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10_Wiki/Topics/Topic_Programming/Topic_Java/Java_Methods.md

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+---
+id: java-methods
+title: "Java Methods"
+category: "Programming_Language"
+status: "draft"
+verification_status: "conceptual"
+canonical_id: ""
+aliases: ["자바 메서드"]
+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", "methods"]
+raw_sources: ["https://www.w3schools.com/java/java_methods.asp"]
+applied_in: []
+github_commit: ""
+---
+
+# [[Java Methods]]
+
+## 🎯 한 줄 통찰 (One-line insight)
+`static` on a method means it belongs to the CLASS itself, not to any object instance — a distinction the tutorial defers explaining fully until objects are introduced later, but flags immediately since every method example so far uses it. [S1]
+
+## 🧠 핵심 개념 (Core concepts)
+- **Method** — a named, reusable block of code that runs only when called; also called a function. [S1]
+- **Purpose** — code reuse: define once, use many times. [S1]
+- **Declaration inside a class** — `static void myMethod() { ... }`. [S1]
+- **`static`** — the method belongs to the class, not an object instance (elaborated later with OOP). [S1]
+- **`void`** — signals no return value. [S1]
+- **Calling** — `myMethod();` — can be called repeatedly. [S1]
+
+## 📖 세부 내용 (Details)
+- Definition: `public class Main { static void myMethod() { // code } }`. [S1]
+- Call and output: `static void myMethod() { System.out.println("I just got executed!"); } public static void main(String[] args) { myMethod(); }`. [S1]
+- Repeated calls: calling `myMethod();` three times inside main prints the message three times. [S1]
+
+## ⚖️ 모순 및 업데이트 (Contradictions & updates)
+소스에서 모순되는 정보는 발견되지 않음.
+
+## 🛠️ 적용 사례 (Applied in summary)
+현재 발견된 실제 적용 사례가 없습니다 — 코드 재사용의 기본 단위이며, 파라미터/반환값/오버로딩으로 확장된다. [S1]
+
+## 💻 코드 패턴 (Code patterns)
+Basic method definition and repeated call (Java):
+```java
+public class Main {
+    static void myMethod() {
+        System.out.println("I just got executed!");
+    }
+    public static void main(String[] args) {
+        myMethod();
+        myMethod();
+        myMethod();
+    }
+}
+```
+
+## ✅ 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 Methods Param]], [[Java Methods Return]], [[Java OOP]]
+- **참조 맥락:** 코드 재사용의 기본 단위 — 파라미터/반환값 챕터로 확장.
+
+## 📚 출처 (Sources)
+- [S1] W3Schools — Java Methods — https://www.w3schools.com/java/java_methods.asp
+
+## 📝 변경 이력 (Change history)
+- 2026-07-04: Initial draft synthesized from the W3Schools "Java Methods" page (Astra wiki-curation, P-Reinforce v3.1 format).