Fast File Copy using NIO in JAVA?

public static void fileCopy( File in, File out )

            throws IOException

    {

        FileChannel inChannel = new FileInputStream( in ).getChannel();

        FileChannel outChannel = new FileOutputStream( out ).getChannel();

        try

        {

//          inChannel.transferTo(0, inChannel.size(), outChannel);      // original -- apparently has trouble copying large files on Windows

 

            // magic number for Windows, 64Mb - 32Kb)

            int maxCount = (64 * 1024 * 1024) - (32 * 1024);

            long size = inChannel.size();

            long position = 0;

            while ( position < size )

            {

               position += inChannel.transferTo( position, maxCount, outChannel );

            }

        }

        finally

        {

            if ( inChannel != null )

            {

               inChannel.close();

            }

            if ( outChannel != null )

            {

                outChannel.close();

            }

        }

    }