public static void main(String[] args) {
       Start testPostRequest = new Start();
       //создаём лист параметров для запроса
       java.util.List<String[]> params = new LinkedList<String[]>();
       params.add(new String[]{"uin_email", "***"});
       params.add(new String[]{"password", "***"});
       params.add(new String[]{"dest", "http://www.icq.com/support/change_password/?icid=nav_pw"});
       params.add(new String[]{"service", "30"});
       params.add(new String[]{"icq_ln", "9BCB804B320E26F8D19B640A8A70950B52043FB82B44DF2CE5CDF3E2D1284D9D"});
       params.add(new String[]{"rem", "1"});
       //будем использовать прокси
       testPostRequest.useProxy = true;
       testPostRequest.proxyAdress = "221.238.17.245";
       testPostRequest.proxyPort = 8080;
       try {
           //отправляем запрос на страницу логина http://vkontakte.ru
           System.out.println(testPostRequest.sendPostRequest("https://www.icq.com/karma/login_page.php", params));
       } catch (IOException e) {
           e.printStackTrace();
       }
   }

private String sendPostRequest(String urlLocation, java.util.List parameters) throws IOException {
       StringBuffer result = new StringBuffer();
       HttpURLConnection connection = getConnection(urlLocation);
       System.out.println("Соединение с " + urlLocation + " установлено.");

       connection.setRequestMethod("POST");
       connection.setRequestProperty("Referer", urlLocation);
       connection.setRequestProperty("Cookie", "your cookies may be here");
       String data = "";
       if (parameters != null) {
           for (int i = 0; i < parameters.size(); i++) {
               String param[] = (String[]) parameters.get(i);
               if (i != 0) {
                   data = data + "&";
               }
               data = data + param[0] + "=" + URLEncoder.encode(param[1], "UTF-8");
           }

       }
       if (parameters != null && data.length() != 0) {
           connection.setRequestProperty("Content-Length", Integer.toString(data.length()));
       }
       connection.connect();

        

       if (parameters != null && data.length() != 0) {
           System.out.println("Отправка данных..");
           PrintWriter out = new PrintWriter(connection.getOutputStream());
           out.write(data);
           out.flush();
           System.out.println("Получение ответа от сервера..");
       }
       result.append("response code: ").append(connection.getResponseCode()).append("\n");
       result.append("response cookies: ").append(getResponseCookies(connection)).append("\n");
       result.append("response page source: ").append("\n");
       

       BufferedReader rd = new BufferedReader(new InputStreamReader(connection.getInputStream()));
       String line;
       while ((line = rd.readLine()) != null) {
           result.append(line).append("\n");
       }
       
       connection.disconnect();
       return result.toString();
   }