String DEFAULT_PATH = "c:\"; int errCode = 0 ; String errDesc = "" ;try { writer = new BufferedWriter(new OutputStreamWriter( new FileOutputStream(DEFAULT_PATH+"bestmodeltrain.csv"), "utf-8")); String sqlupdate = "SELECT FILE_DES FROM DATA_FILE WHERE FILE_NAME = 'Train.csv'"; ResultSet rsdes= (ResultSet) new ConnectionDB().connectoDB(sqlupdate); while (rsdes.next()) { writer.write(rsdes.getString("FILE_DES")); } } catch (IOException ex) { errCode = -4; errDesc = "IOException ==> "+ex; } catch(SQLException ex){ errCode = -5; errDesc = "SQLException ==> "+ex; }