title: Search twitter by language
body: <p>In twitter by using lang operator you can search for retrieving tweets from a particular language: For example, the following search will return tweets only in english:</p>
  
  <pre><code>https://twitter.com/search?q=lang:en
  </code></pre>
  
  <p>Is there a way to achieve this using twitter api, especially using twitter4j. I know there is a language attribute for search but it also requires at least one keyword to make a search, I would like to search by a particular language without giving any keyword query. The following command in java driver returns the following error: </p>
  
  <pre><code>Query searchQuery = new Query() //
                          .count(resultsPerPage) //
                          .since(since)//
                          .lang("en");
  
  400:The request was invalid. An accompanying error message will explain why. This is the status code will be returned during version 1.0 rate limiting(https://dev.twitter.com/pages/rate-limiting). In API v1.1, a request without authentication is considered invalid and you will get this response.
  message - Query parameters are missing
  code - 25
  </code></pre>
  
  <p>Cheers</p>