code: public String getUserName() throws SQLException {
  
          ResultSet rs = execute("CALL USER()");
  
          rs.next();
  
          String result = rs.getString(1);
  
          rs.close();
  
          return result;
      }
docs: Retrieves the user name as known to this database.
  
  @return the database user name
  @exception SQLException if a database access error occurs