Ler XML de um endereço http

try {
            int timeout = 300 * 1000;
            URL httpURL = new URL("http://...");
            HttpURLConnection conn = (HttpURLConnection) httpURL.openConnection();
            conn.setReadTimeout(timeout);
            InputStream is = conn.getInputStream();
            BufferedReader reader = new BufferedReader(new InputStreamReader(is));
            String xml = new String();
            while ((xml = reader.readLine()) != null) {
                System.out.println(xml);
            }            
        } catch (Exception e) {
            e.printStackTrace();
        }

java.net.ConnectException: Connection timed out: connect
	at java.net.PlainSocketImpl.socketConnect(Native Method)
	at java.net.PlainSocketImpl.doConnect(Unknown Source)
	at java.net.PlainSocketImpl.connectToAddress(Unknown Source)...