Example for FileInputStream and FileOutputStream

import java.io.*;
import java.nio.channels.*;


public class CopyFileChannel {

    public static void main(String[] args) {
        if (args.length < 2) {
            System.out.println("Please provide input and output files");
            System.exit(0);
        }

        String inputFile = args[0];
        String outputFile = args[1];

        try (
            FileChannel sourceChannel = new FileInputStream(inputFile).getChannel();
            FileChannel destChannel = new FileOutputStream(outputFile).getChannel();
        ) {
            sourceChannel.transferTo(0, sourceChannel.size(), destChannel);
        } catch (IOException ex) {
            ex.printStackTrace();
        }
    }
}