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bboks.net™
자바에서 파일을 복사하는 4가지 방법 본문
1. FileStream
private static void copyFileUsingFileStreams(File source, File dest) throws IOException { InputStream input = null; OutputStream output = null; try { input = new FileInputStream(source); output = new FileOutputStream(dest); byte[] buf = new byte[1024]; int bytesRead; while ((bytesRead = input.read(buf)) > 0) { output.write(buf, 0, bytesRead); } } finally { input.close(); output.close(); } }
2. java.nio.channels.FileChannel
private static void copyFileUsingFileChannels(File source, File dest) throws IOException { FileChannel inputChannel = null; FileChannel outputChannel = null; try { inputChannel = new FileInputStream(source).getChannel(); outputChannel = new FileOutputStream(dest).getChannel(); outputChannel.transferFrom(inputChannel, 0, inputChannel.size()); } finally { inputChannel.close(); outputChannel.close(); } }
3. Apache Commons IO
private static void copyFileUsingApacheCommonsIO(File source, File dest) throws IOException { FileUtils.copyFile(source, dest); }
4. Java 7 Files class
private static void copyFileUsingJava7Files(File source, File dest) throws IOException { Files.copy(source.toPath(), dest.toPath()); }