String baseUrl = String.format("https://api.mlab.com/api/1/databases/%s/collections/%s?q=",DB_NAME,COLLECTION_SITE_NAME );
    StringBuilder stringBuilder = new StringBuilder(baseUrl);
    try {
    String first = URLEncoder.encode("{","UTF-8");
    String second = URLEncoder.encode("}","UTF-8");
    String point = URLEncoder.encode(":","UTF-8");
    String URL = first+""name""+point+siteName+second;
    stringBuilder.append(URL);
stringBuilder.append("&apiKey="+API_KEY);
    } catch (UnsupportedEncodingException e) {
        e.printStackTrace();
    }
    return stringBuilder.toString();
}