Java tutorial
import java.io.FileInputStream; import java.io.FileOutputStream; import java.nio.channels.FileChannel; public class Copy { public static void main(String[] args) { FileChannel in = null; FileChannel out = null; if (args.length < 2) { System.out.println("Usage: java Copy <from> <to>"); System.exit(1); } try { in = new FileInputStream(args[0]).getChannel(); out = new FileOutputStream(args[1]).getChannel(); out.transferFrom(in, 0L, (int) in.size()); } catch (Exception e) { e.printStackTrace(); } } }