1             //创建mysql的Driver对象 2             Driver driver=new com.mysql.jdbc.Driver(); 3             //jdbc url  定位一个数据库： 4             String url="jdbc:mysql://localhost:3306/jdbcdb"; 5             //用于存储用户名和密码 6             Properties info=new Properties(); 7             info.put("user", "root");//key值确定——“user” 8             info.put("password", "mysql"); 9             //获得连接对象10             Connection connection= driver.connect(url, info);11             System.out.println(connection);                        

1 //向驱动管理器注册驱动  ——把mysql驱动对象类的对象放置在集合中2             DriverManager.registerDriver(new com.mysql.jdbc.Driver());3             4             String url="jdbc:mysql://localhost/jdbcdb";5             //获取连接  ——先从集合中获取驱动，再调用驱动6             Connection connection= DriverManager.getConnection(url, "root", "mysql");7             System.out.println(connection);

 1 try { 2             //加载jdbc的驱动类名 3             Class.forName("com.mysql.jdbc.Driver"); 4         } catch (ClassNotFoundException e) { 5             // TODO Auto-generated catch block 6             e.printStackTrace(); 7         } 8          9         try {10             String url="jdbc:mysql://localhost/jdbcdb";11             //获取连接12             Connection connection= DriverManager.getConnection(url, "root", "mysql");13             System.out.println(connection);14         } catch (SQLException e) {15             // TODO Auto-generated catch block16             e.printStackTrace();17         }