BasicCookieStore cookieStore = new BasicCookieStore();
        CloseableHttpClient httpClient = HttpClients.custom().setDefaultCookieStore(cookieStore).build();
        HttpGet httpGet = new HttpGet("http://odnoklassniki.ru/");
        CloseableHttpResponse response = httpClient.execute(httpGet);
        HttpEntity entity = response.getEntity();
        String responseBody = EntityUtils.toString(entity);

RequestConfig globalConfig = RequestConfig.custom().setCookieSpec(CookieSpecs.BROWSER_COMPATIBILITY).build();
CloseableHttpClient httpClient = HttpClients.custom().setDefaultRequestConfig(globalConfig).build();