Ler um xml que retorna de uma url

StringBuffer sb = new StringBuffer();

try {
        // Create a URL for the desired page
        URL url = new URL("http://hostname:80/index.html");
            BufferedReader in = new BufferedReader(new InputStreamReader(url.openStream()));
        String str;
        while ((str = in.readLine()) != null) {
            sb.append(str);
        }
        in.close();
    } catch (MalformedURLException e) {
    } catch (IOException e) {
    }

System.out.println(sb.toString());