docs(10_Wiki): Topic_Business/General/Graphic/Programming을 Topics/ 하위로 이동

최상위 10_Wiki/Topic_*였던 4개 카테고리 폴더를 10_Wiki/Topics/Topic_* 로 재배치. 콘텐츠 변경 없음(순수 폴더 이동) — Topics/ 하위 나머지 폴더는 이미 지난 커밋에서 전부 정리된 상태(잔존 항목은 에이전트 운영 상태 및 사용자가 보존을 요청한 업데이트0615/무제 3.canvas 뿐).
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+---
+id: java-encapsulation
+title: "Java Encapsulation"
+category: "Programming_Language"
+status: "draft"
+verification_status: "conceptual"
+canonical_id: ""
+aliases: ["getters and setters", "자바 캡슐화"]
+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", "oop", "encapsulation", "getters-setters"]
+raw_sources: ["https://www.w3schools.com/java/java_encapsulation.asp"]
+applied_in: []
+github_commit: ""
+---
+
+# [[Java Encapsulation]]
+
+## 🎯 한 줄 통찰 (One-line insight)
+Get/set methods give control beyond simple read/write access — the source explicitly notes you can make an attribute read-only (get method only, no set) or write-only (set method only, no get), a flexibility that direct public-field access can never provide. [S1]
+
+## 🧠 핵심 개념 (Core concepts)
+- **Encapsulation** — hiding sensitive data from users by (1) declaring attributes `private` and (2) providing public get/set methods. [S1]
+- **Naming convention** — `get`/`set` prefix + capitalized variable name (`getName()`, `setName()`). [S1]
+- **Getter** — returns the private variable's value. [S1]
+- **Setter** — takes a parameter and assigns it via `this.field = param;`. [S1]
+- **Read-only/write-only design** — omit the setter for read-only, omit the getter for write-only. [S1]
+
+## 📖 세부 내용 (Details)
+- Private field with getter/setter: `private String name; public String getName() { return name; } public void setName(String newName) { this.name = newName; }`. [S1]
+- Direct access fails: `myObj.name = "John"; // error: name has private access in Person`. [S1]
+- Correct access via encapsulation: `myObj.setName("John"); System.out.println(myObj.getName()); // "John"`. [S1]
+- Benefits listed: better control over attributes/methods, read-only/write-only capability, flexibility to change internals without affecting other code, increased data security. [S1]
+
+## ⚖️ 모순 및 업데이트 (Contradictions & updates)
+소스에서 모순되는 정보는 발견되지 않음.
+
+## 🛠️ 적용 사례 (Applied in summary)
+현재 발견된 실제 적용 사례가 없습니다 — private 필드 + get/set 메서드는 데이터 보호의 표준 설계 패턴이다. [S1]
+
+## 💻 코드 패턴 (Code patterns)
+Private field with getter/setter encapsulation (Java):
+```java
+public class Person {
+    private String name; // private = restricted access
+    public String getName() {
+        return name;
+    }
+    public void setName(String newName) {
+        this.name = newName;
+    }
+}
+```
+
+## ✅ 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 Modifiers]], [[Java This Keyword]], [[Java Packages]]
+- **참조 맥락:** private 필드 보호 원칙 — Packages 챕터로 이어짐.
+
+## 📚 출처 (Sources)
+- [S1] W3Schools — Java Encapsulation — https://www.w3schools.com/java/java_encapsulation.asp
+
+## 📝 변경 이력 (Change history)
+- 2026-07-04: Initial draft synthesized from the W3Schools "Java Encapsulation" page (Astra wiki-curation, P-Reinforce v3.1 format).