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id, title, category, status, verification_status, canonical_id, aliases, duplicate_of, source_trust_level, confidence_score, created_at, updated_at, review_reason, merge_history, tags, raw_sources, applied_in, github_commit
id title category status verification_status canonical_id aliases duplicate_of source_trust_level confidence_score created_at updated_at review_reason merge_history tags raw_sources applied_in github_commit
java-files-delete Java Files Delete Programming_Language draft conceptual
delete()
자바 파일 삭제
B 0.87 2026-07-04 2026-07-04
java
programming
w3schools
files
io
delete
https://www.w3schools.com/java/java_files_delete.asp

Java Files Delete

🎯 한 줄 통찰 (One-line insight)

delete() works identically on files AND directories, but folders must be EMPTY first — the same method call (myObj.delete()) succeeds on a populated file yet fails on a non-empty directory, with no separate API for the two cases. [S1]

🧠 핵심 개념 (Core concepts)

  • delete() — deletes a file, or an empty folder; returns true/false for success/failure. [S1]
  • Folder deletion constraint — a directory must be empty before it can be deleted with delete(). [S1]

📖 세부 내용 (Details)

  • Delete file: File myObj = new File("filename.txt"); if (myObj.delete()) { System.out.println("Deleted the file: " + myObj.getName()); } else { System.out.println("Failed to delete the file."); }. [S1]
  • Delete folder (must be empty): File myObj = new File("C:\\Users\\MyName\\Test"); if (myObj.delete()) { System.out.println("Deleted the folder: " + myObj.getName()); }. [S1]

⚖️ 모순 및 업데이트 (Contradictions & updates)

  • 폴더 삭제 제약: 폴더가 비어있어야만 delete()로 삭제 가능하다는 점이 명시됨. [S1]

🛠️ 적용 사례 (Applied in summary)

현재 발견된 실제 적용 사례가 없습니다 — File/Create/Write/Read/Delete 4단계 챕터의 마지막 단계로, 파일 생명주기 관리를 완성한다. [S1]

💻 코드 패턴 (Code patterns)

Deleting a file with success check (Java):

File myObj = new File("filename.txt");
if (myObj.delete()) {
    System.out.println("Deleted the file: " + myObj.getName());
} else {
    System.out.println("Failed to delete the file.");
}

검증 상태 및 신뢰도

  • 상태: draft
  • 검증 단계: conceptual
  • 출처 신뢰도: B (W3Schools — widely used educational reference, not a primary standards body)
  • 신뢰 점수: 0.87
  • 중복 검사 결과: 신규 생성 (New discovery)

🔗 지식 그래프 (Knowledge Graph)

📚 출처 (Sources)

📝 변경 이력 (Change history)

  • 2026-07-04: Initial draft synthesized from the W3Schools "Java Delete Files" page (Astra wiki-curation, P-Reinforce v3.1 format).