public static void main(String[] args) throws Exception {
String fromFileName = args[0];
String toFileName = args[1];
FileChannel in = new FileInputStream(fromFileName).getChannel();
FileChannel out = new FileOutputStream(toFileName).getChannel();
ByteBuffer buff = ByteBuffer.allocate(32 * 1024);
while (in.read(buff) > 0) {
buff.flip();
out.write(buff);
buff.clear();
}
in.close();
out.close();
}
