一个连接池的例子（来自JIVE）（3）

//文件：DbConnectionDefaultPool.java的第三部分
        /**
         * Returns the age of a connection -- the time since it was handed out to
         * an application.
         */
        public long getAge(Connection conn) { // Returns the age of the connection in millisec.
            int thisconn = idOfConnection(conn);
            return System.currentTimeMillis() - connLockTime[thisconn];
        }
        private void createConn(int i) throws SQLException {
             Date now = new Date();
             try {
                Class.forName (dbDriver);
                Properties dbProp = new Properties();
                //log.println("Creating.....");
                dbProp.put("user", dbLogin);
                dbProp.put("password", dbPassword);
                dbProp.put("characterEncoding","gb2112");
                //dbProp.put("useUnicode", "true");