我无法使用Oracle Sql query在java中设置参数

import java.sql.*;

public class OracleQueryExample {
    public static void main(String[] args) {
        String url = "jdbc:oracle:thin:@localhost:1521:xe";
        String username = "your_username";
        String password = "your_password";

        try {
            // 加载Oracle JDBC驱动程序
            Class.forName("oracle.jdbc.driver.OracleDriver");

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

            // 创建PreparedStatement对象
            String sql = "SELECT * FROM your_table WHERE column1 = ? AND column2 = ?";
            PreparedStatement statement = connection.prepareStatement(sql);

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

            // 执行查询
            ResultSet resultSet = statement.executeQuery();

            // 处理查询结果
            while (resultSet.next()) {
                // 获取结果集中的数据
                String column1Value = resultSet.getString("column1");
                String column2Value = resultSet.getString("column2");
                // 其他操作...
            }

            // 关闭资源
            resultSet.close();
            statement.close();
            connection.close();
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }
}