---
id: java-methods-overloading
title: "Java Methods Overloading"
category: "Programming_Language"
status: "draft"
verification_status: "conceptual"
canonical_id: ""
aliases: ["method overloading", "자바 메서드 오버로딩"]
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", "overloading"]
raw_sources: ["https://www.w3schools.com/java/java_methods_overloading.asp"]
applied_in: []
github_commit: ""
---

# [[Java Methods Overloading]]

## 🎯 한 줄 통찰 (One-line insight)
Method overloading is explicitly framed as the FIX for a code smell — the tutorial first shows two differently-named methods (`plusMethodInt`, `plusMethodDouble`) doing the same conceptual job, then demonstrates overloading them under one shared name (`plusMethod`) as the better design. [S1]

## 🧠 핵심 개념 (Core concepts)
- **Method overloading** — multiple methods sharing the same name but differing in parameter number/type. [S1]
- **Compiler resolves by signature** — Java picks the right overload based on argument types/count at the call site. [S1]
- **Design motivation** — avoids duplicating near-identical methods with different names just to handle different types. [S1]
- **Rule** — same name is legal only if the number and/or type of parameters differs. [S1]

## 📖 세부 내용 (Details)
- Before overloading (bad pattern): `static int plusMethodInt(int x, int y) { return x + y; } static double plusMethodDouble(double x, double y) { return x + y; }`. [S1]
- After overloading (good pattern): `static int plusMethod(int x, int y) { return x + y; } static double plusMethod(double x, double y) { return x + y; }`. [S1]
- Usage: `int myNum1 = plusMethod(8, 5); double myNum2 = plusMethod(4.3, 6.26);` — the correct overload is chosen automatically based on argument types. [S1]

## ⚖️ 모순 및 업데이트 (Contradictions & updates)
소스에서 모순되는 정보는 발견되지 않음.

## 🛠️ 적용 사례 (Applied in summary)
현재 발견된 실제 적용 사례가 없습니다 — int/double 등 타입별로 별도 메서드명을 두는 대신 오버로딩으로 통합하는 설계 개선 사례다. [S1]

## 💻 코드 패턴 (Code patterns)
Overloaded plusMethod for int and double (Java):
```java
static int plusMethod(int x, int y) {
    return x + y;
}
static double plusMethod(double x, double y) {
    return x + y;
}
public static void main(String[] args) {
    int myNum1 = plusMethod(8, 5);
    double myNum2 = plusMethod(4.3, 6.26);
}
```

## ✅ 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 Return]], [[Java Scope]], [[Java Recursion]]
- **참조 맥락:** 동일 이름의 메서드를 매개변수로 구분 — Scope/Recursion 챕터로 이어짐.

## 📚 출처 (Sources)
- [S1] W3Schools — Java Method Overloading — https://www.w3schools.com/java/java_methods_overloading.asp

## 📝 변경 이력 (Change history)
- 2026-07-04: Initial draft synthesized from the W3Schools "Java Method Overloading" page (Astra wiki-curation, P-Reinforce v3.1 format).