package io;

import java.nio.*;

import java.nio.channels.*;

import java.io.*;

import java.util.*;

/**

* RUN:

* javac io/ChannelCopy.java && java io.ChannelCopy io/ChannelCopy.java io/test.txt

*

* OUTPUT:

*

*/

public class ChannelCopy {

private static final int BSIZE = 1024;

public static void main(String[] args) throws Exception {

if (args.length != 2) {

System.out.println("parameters: Sourse Target");

System.exit(1);

}

FileChannel in = new FileInputStream(args[0]).getChannel();

FileChannel out = new FileOutputStream(args[1]).getChannel();

ByteBuffer buffer = ByteBuffer.allocate(BSIZE);

while (in.read(buffer) != -1) {

buffer.flip();

out.write(buffer);

buffer.clear();

}

}

}