Use Java NIO to Copy File : FileInputStream « File Input Output « Java

Use Java NIO to Copy File


import java.nio.ByteBuffer;
import java.nio.channels.FileChannel;

public class Main {
  public static void main(String[] args) throws Exception {
    String source = "s.txt";
    String destination = "d.txt";

    FileInputStream fis = new FileInputStream(source);
    FileOutputStream fos = new FileOutputStream(destination);

    FileChannel fci = fis.getChannel();
    FileChannel fco = fos.getChannel();

    ByteBuffer buffer = ByteBuffer.allocate(1024);

    while (true) {
      int read =;

      if (read == -1)


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