Fastest way to copy files in Java

Question

What ist the fastest way to copy a big number of files in Java. So far I have used file streams and nio. Overall streams seem to be faster than nio. What experiences did you mak

Answer 1

Its depend of files(bigger files), for me is fastest way this one with buffered stream

 public void copyFile(File inFileStr, File outFileStr) throws IOException {

    try (BufferedInputStream bis = new BufferedInputStream(new FileInputStream(inFileStr)); 
        BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(outFileStr))) {

        byte[] buffer = new byte[1024 * 1024];
        int read = 0;
        while ((read = bis.read(buffer)) != -1) {
            bos.write(buffer, 0, read);
        }

        bis.close();
        bos.close();
    } catch (IOException ex) {
        ex.printStackTrace();
    }

}