Como enviar um comando CURL de evento em JAVA

package br.com.devmedia.curl;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.URL;

public class Main {

    public static void main(String args[]) {

        BufferedReader reader;

        try {
            URL url = new URL("http://pox.globo.com/rss/g1/");

            reader = new BufferedReader(new InputStreamReader(url.openStream(), "UTF-8"));

            for (String line; (line = reader.readLine()) != null; ) {
                System.out.println(line);
            }

            reader.close();
        } catch (IOException ioe) {
            System.out.println(ioe.getMessage());
        }
    }
}