java 加载mysql驱动

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;

public class MySQLConnectionExample {
    public static void main(String[] args) {
        // 驱动类名
        String driverClassName = "com.mysql.cj.jdbc.Driver";
        // 数据库URL
        String url = "jdbc:mysql://localhost:3306/mydatabase";
        // 用户名
        String username = "root";
        // 密码
        String password = "password";

        try {
            // 注册驱动
            Class.forName(driverClassName);
            // 建立连接
            Connection connection = DriverManager.getConnection(url, username, password);
            System.out.println("成功连接到数据库!");
            // 关闭连接
            connection.close();
        } catch (ClassNotFoundException e) {
            System.err.println("找不到MySQL驱动程序!");
            e.printStackTrace();
        } catch (SQLException e) {
            System.err.println("连接数据库失败!");
            e.printStackTrace();
        }
    }
}