public CSVRow addRow(){
  CSVRow row=new CSVRow();
  row.setRowNumber(rows.size());
  rows.add(row);
  return row;
}

public CSVRow addRow ( ) { CSVRow row = new CSVRow ( ) ; row . setRowNumber ( rows . size ( ) ) ; rows . add ( row ) ; return row ; }
adds a new and empty row
