---
id: java-booleans-type
title: "Java Booleans Type"
category: "Programming_Language"
status: "draft"
verification_status: "conceptual"
canonical_id: ""
aliases: ["boolean data type", "자바 불리언 타입"]
duplicate_of: ""
source_trust_level: "B"
confidence_score: 0.88
created_at: 2026-07-04
updated_at: 2026-07-04
review_reason: ""
merge_history: []
tags: ["java", "programming", "w3schools", "boolean"]
raw_sources: ["https://www.w3schools.com/java/java_data_types_boolean.asp"]
applied_in: []
github_commit: ""
---

# [[Java Booleans Type]]

## 🎯 한 줄 통찰 (One-line insight)
Java's boolean literals are exactly `true`/`false` (lowercase, unquoted keywords) — the primitive type built for any two-state distinction (YES/NO, ON/OFF), primarily used in conditional testing. [S1]

## 🧠 핵심 개념 (Core concepts)
- **`boolean`** — a primitive type holding only `true` or `false`. [S1]
- **Use case** — mostly used for conditional testing. [S1]

## 📖 세부 내용 (Details)
- Basic declaration: `boolean isJavaFun = true; boolean isFishTasty = false;`. [S1]

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

## 🛠️ 적용 사례 (Applied in summary)
현재 발견된 실제 적용 사례가 없습니다 — 이후 Conditions(If...Else) 챕터에서 조건 평가의 기초로 재사용된다. [S1]

## 💻 코드 패턴 (Code patterns)
Boolean declaration (Java):
```java
boolean isJavaFun = true;
boolean isFishTasty = false;
```

## ✅ 검증 상태 및 신뢰도
- **상태:** draft
- **검증 단계:** conceptual
- **출처 신뢰도:** B (W3Schools — widely used educational reference, not a primary standards body)
- **신뢰 점수:** 0.88
- **중복 검사 결과:** 신규 생성 (New discovery)

## 🔗 지식 그래프 (Knowledge Graph)
- **상위/루트:** [[Java Tutorial]]
- **관련 개념:** [[Java Data Types]], [[Java If Else]], [[Java Booleans]]
- **참조 맥락:** 조건 평가의 기초 타입 — If...Else 챕터로 이어진다.

## 📚 출처 (Sources)
- [S1] W3Schools — Java Boolean Data Types — https://www.w3schools.com/java/java_data_types_boolean.asp

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