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();       }       }   }