long size(String fileName) throws IOException {
  send("SIZE " + fileName);
  readCode(250);
  long size=Long.parseLong(message);
  return size;
}

long size ( String fileName ) throws IOException { send ( "SIZE " + fileName ) ; readCode ( 250 ) ; long size = Long . parseLong ( message ) ; return size ; }
get the size of a file ( size ) .
