无法使用JAVA将数据保存到MYSQL数据库中

import java.sql.*;

public class MySQLExample {
    public static void main(String[] args) {
        String url = "jdbc:mysql://localhost:3306/mydatabase";
        String username = "root";
        String password = "password";

        try {
            // 导入JDBC驱动
            Class.forName("com.mysql.jdbc.Driver");

            // 建立数据库连接
            Connection connection = DriverManager.getConnection(url, username, password);

            // 创建SQL语句
            String sql = "INSERT INTO mytable (column1, column2) VALUES (?, ?)";

            // 创建PreparedStatement对象
            PreparedStatement statement = connection.prepareStatement(sql);

            // 设置参数
            statement.setString(1, "value1");
            statement.setString(2, "value2");

            // 执行SQL语句
            int rowsAffected = statement.executeUpdate();

            // 处理结果
            System.out.println("Rows affected: " + rowsAffected);

            // 关闭连接
            statement.close();
            connection.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}