JDBC数据库连接1）通过Driver连接数据库

import java.sql.SQLException;
import java.util.Properties;
import com.mysql.jdbc.*;
public class UseDriverToConnectDB
{
public static void main(String [] args) throws SQLException
{
//第一步 创建一个Driver对象
Driver driver = new com.mysql.jdbc.Driver();

//第二步 准备连接数据库的信息
String url = "jdbc:mysql://localhost:3306/";
Properties info = new Properties();

info.put("user", "123");
info.put("password", "");
driver.connect(url, info);

//第三步 调用driver里面的connection放法来连接数据库
Connection connection = (Connection) driver.connect(url, info);

System.out.println(connection);

} }