public static Sql newInstance(String url,String user,String password) throws SQLException {
  Connection connection=DriverManager.getConnection(url,user,password);
  return new Sql(connection);
}

public static Sql newInstance ( String url , String user , String password ) throws SQLException { Connection connection = DriverManager . getConnection ( url , user , password ) ; return new Sql ( connection ) ; }
creates a new sql instance given a jdbc connection url , a username and a password .
