간단한 CRUD를 구현하기 위해 아이디어를 통해 mysql을 연결하는 방법

public class query {
    public static void main(String[] args) throws ClassNotFoundException, SQLException {

        //1.注册数据库的驱动
//        Driver  driver=new com.mysql.jdbc.Driver();
//        DriverManager.registerDriver(driver);
        Class.forName("com.mysql.jdbc.Driver");


        //2.获取数据库连接
        String  url="jdbc:mysql://localhost:3306/StudentdbTest?useSSL=false";
        Connection connection = DriverManager.getConnection(url, "root", "root123");

        //3.获取数据库的对象
        Statement statement = connection.createStatement();
        String sql="select *from student";
        ResultSet resultSet = statement.executeQuery(sql);
//        Statement statement = JDBCUtil.getConnection.createStatement();
//        String sql="select *from student";
//        ResultSet resultSet = statement.executeQuery(sql);
        //4.遍历结果集,取出数据
        while(resultSet.next()){
            String p_id = resultSet.getString("P_Id");
            String p_name = resultSet.getString("P_Name");
            System.out.println("学号:"+p_id+"姓名："+p_name);
        }

        //5.关闭数据库连接
        resultSet.close();
        statement.close();
        connection.close();
        //JDBCUtil.getConnection.close();

    }
}