Here you can find the source of createConnection(Properties props, String prefix)
public static Connection createConnection(Properties props, String prefix) throws Exception
//package com.java2s; /*// ww w .j av a 2s . c o m * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. The ASF licenses this file to You * 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. For additional information regarding * copyright in this work, please see the NOTICE file in the top level * directory of this distribution. */ import java.sql.Connection; import java.sql.DriverManager; import java.util.Properties; public class Main { /** * Create connection based on properties:<br/> * - driverClassName<br/> * - connectionUrl<br/> * - userName<br/> * - password<br/> */ public static Connection createConnection(Properties props, String prefix) throws Exception { Connection con; if (prefix == null) { prefix = ""; } String driverClassName = props.getProperty(prefix + "driverClassName"); String connectionUrl = props.getProperty(prefix + "connectionUrl"); String userName = props.getProperty(prefix + "userName"); String password = props.getProperty(prefix + "password"); Class.forName(driverClassName); if (userName != null && password != null) { con = DriverManager.getConnection(connectionUrl, userName, password); } else { con = DriverManager.getConnection(connectionUrl); } return con; } }