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Utility classes that only depends on JDK
There is a newer version: 0.7
/*
 * Copyright (c) 2016, The Dattack team (http://www.dattack.com)
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.dattack.jtoolbox.jdbc;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

/**
 * A collection of useful method to simplify working with JDBC.
 *
 * @author cvarela
 * @since 0.1
 */
@SuppressWarnings("checkstyle:AbbreviationAsWordInName")
public final class JDBCUtils {

    private static final Logger LOGGER = LoggerFactory.getLogger(JDBCUtils.class);

    /**
     * Close a Connection ignoring null values and exceptions.
     *
     * @param connection
     *            the Connection to close, may be null.
     */
    public static void closeQuietly(final Connection connection) {
        if (connection != null) {
            try {
                connection.close();
            } catch (final SQLException e) {
                LOGGER.warn("Unable to close the Connection object: {}", e.getMessage());
            }
        }
    }

    /**
     * Close a ResultSet ignoring null values and exceptions.
     *
     * @param resultSet
     *            the ResultSet to close, may be null.
     */
    public static void closeQuietly(final ResultSet resultSet) {
        if (resultSet != null) {
            try {
                resultSet.close();
            } catch (final SQLException e) {
                LOGGER.warn("Unable to close the ResultSet object: {}", e.getMessage());
            }
        }
    }

    /**
     * Close a Statement ignoring null values and exceptions.
     *
     * @param stmt
     *            the Statement to close, may be null.
     */
    public static void closeQuietly(final Statement stmt) {
        if (stmt != null) {
            try {
                stmt.close();
            } catch (final SQLException e) {
                LOGGER.warn("Unable to close the Statement object: {}", e.getMessage());
            }
        }
    }

    private JDBCUtils() {
        // utility class
    }
}