需要注意一下兩點，與以前的版本不一樣：

private static final String DRIVER_NAME = "com.mysql.cj.jdbc.Driver";
//資料庫連線地址
private static final String URL = "jdbc:mysql://localhost:3306/demo?useUnicode=true&characterEncoding=UTF-8&useSSL=false";

全部程式碼：

import java.sql.*;

public class DBTest {
    //mysql驅動包名
    private
 
 static final String DRIVER_NAME = "com.mysql.cj.jdbc.Driver";
    //資料庫連線地址
    private static final String URL = "jdbc:mysql://localhost:3306/demo?useUnicode=true&characterEncoding=UTF-8&useSSL=false";
    
    //使用者名稱
    private static final String USER_NAME = "root";
    //密碼
    private static final
 
 String PASSWORD = "1024";
    public static void main(String[] args){
        Connection connection = null;
        try {
            //載入mysql的驅動類
            Class.forName(DRIVER_NAME);
            //獲取資料庫連線
            connection = DriverManager.getConnection(URL, USER_NAME, PASSWORD);
            //mysql查詢語句
 

            String sql = "SELECT * FROM student";
            PreparedStatement prst = connection.prepareStatement(sql);
            //結果集
            ResultSet rs = prst.executeQuery();
            while (rs.next()) {
                System.out.println("名字" + rs.getString("name"));
            }
            rs.close();
            prst.close();
        } catch (Exception e) {
            e.printStackTrace();
        }finally {
            if (connection != null) {
                try {
                    connection.close();
                } catch (SQLException e) {
                    e.printStackTrace();
                }
            }
        }
    }
}