public static Connection getConnection(String key, boolean useConnectionPool, String poolName) {
    Connection connection = null;
    String alias = "DBCP" + poolName + "_" + key;
    String driverClass = "com.mysql.jdbc.Driver";
    checkAndLoadProps();
    String driverUrl = "jdbc:mysql://" + props.getProperty(key + "_DBMS_URL") + "/" + props.getProperty(key + "_DEF_SCHEMA") + "?autoReconnect=true&useUnicode=true&characterEncoding=utf8&jdbcCompliantTruncation=false&rewriteBatchedStatement=true";
    String connectionPoolUrl = "proxool." + alias + ":" + driverClass + ":" + driverUrl;
    try {
        if (useConnectionPool) {
            info.remove("user");
            String user = props.getProperty(key + "_CLIENT");
            info.setProperty("user", user);
            info.remove("password");
            String password = props.getProperty(key + "_CLIENT_PASS");
            info.setProperty("password", password);
            String host = props.getProperty(key + "_DBMS_URL");

            synchronized (poolName) {
                connection = DriverManager.getConnection(connectionPoolUrl, info);
            }

        }
        if (connection != null) {
            return connection;
        } else {
            System.out.println("DB Connection Not Established");
        }

    } catch (Exception ex) {
        System.out.println("DB Connection Not Established::" + ex.getMessage());
        ex.printStackTrace();
    }
    return null;
}