mysql怎么添加数据库连接

import java.sql.*;

public class Main {
    public static void main(String[] args) {
        try {
            // 加载数据库驱动程序
            Class.forName("com.mysql.cj.jdbc.Driver");

            // 建立数据库连接
            String url = "jdbc:mysql://localhost:3306/mydatabase?useUnicode=true&characterEncoding=utf8&serverTimezone=UTC";
            String username = "root";
            String password = "password";
            Connection connection = DriverManager.getConnection(url, username, password);

            // 进行数据库操作
            // ...

            // 关闭数据库连接
            connection.close();
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }
}