Java SQL ResultSet Double Read getDouble(ResultSet resultSet, String columnName)

Description

Returns a double value using a given SQL result set and column name.

License

Open Source License

Parameter

Parameter	Description
resultSet	- Result set.
columnName	- Column name.

Return

Double - Column value.

Declaration

public static Double getDouble(ResultSet resultSet, String columnName) throws SQLException 

Method Source Code

//package com.java2s;
/*/*from   w w w .  java 2  s .c om*/
 * Copyright (C) 2015 Bryan W. Snipes
 * 
 * This file is part of the JDistil web application framework.
 * 
 * JDistil is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * JDistil is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public License
 * along with JDistil.  If not, see <http://www.gnu.org/licenses/>.
 */

import java.sql.ResultSet;
import java.sql.SQLException;

public class Main {
    /**
      Returns a double value using a given SQL result set and column name.
      @param resultSet - Result set.
      @param columnName - Column name.
      @return Double - Column value.
    */
    public static Double getDouble(ResultSet resultSet, String columnName) throws SQLException {

        // Initialize return value
        Double value = null;

        if (resultSet != null && columnName != null) {

            // Get column value
            double columnValue = resultSet.getDouble(columnName);

            // Check for null value
            if (!resultSet.wasNull()) {
                value = new Double(columnValue);
            }
        }

        return value;
    }
}

Related

1. getDouble(ResultSet res, String name)
2. getDouble(ResultSet resultSet, int columnIndex)
3. getDouble(ResultSet rs, int index)
4. getDouble(ResultSet rs, String colName)
5. getDouble(ResultSet rs, String column)
6. getDouble(ResultSet rs, String columnName)