使用JayDeBe和Amazon Redshift，有没有一种方法可以自动从查询中提取相关的列名？

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.ResultSetMetaData;
import java.sql.Statement;

public class RedshiftColumnExtractor {
    public static void main(String[] args) {
        try {
            // 1. 使用JayDeBe连接到Amazon Redshift数据库
            Class.forName("com.amazon.redshift.jdbc42.Driver");
            Connection conn = DriverManager.getConnection("jdbc:redshift://hostname:port/database", "username", "password");

            // 2. 执行查询语句并获取查询结果
            Statement stmt = conn.createStatement();
            String query = "SELECT column1, column2 FROM table";
            ResultSet rs = stmt.executeQuery(query);

            // 3. 通过ResultSet对象获取查询结果的元数据
            ResultSetMetaData rsmd = rs.getMetaData();

            // 4. 从元数据中提取列名
            int columnCount = rsmd.getColumnCount();
            for (int i = 1; i <= columnCount; i++) {
                String columnName = rsmd.getColumnLabel(i);
                System.out.println("Column " + i + ": " + columnName);
            }

            // 关闭连接
            rs.close();
            stmt.close();
            conn.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}