Best Java library for automatic language identification?

Question

Which is the best Java library for automatic language identification/classification?

Hypothetical syntax:

String languageCode = LanguageIdentificationAPI.identifyLanguage("Hello world.");
// languageCode would now contain "en" for English.

Thanks a lot in advance!

Answer 1

The obvious solution, based on n-gram statistics and identification of common words, has been patented, so let the coder beware!

Answer 2

http://textcat.sourceforge.net/ ?

Answer 3

Or using google's public language api, if remote access is an option:

try {
    String s = URLEncoder.encode("Há tantos burros mandando em homens de inteligência, que, às vezes, fico pensando que a burrice é uma Ciência", "UTF-8");
    URL url = new URL("http://ajax.googleapis.com/ajax/services/language/detect?v=1.0&q="+s);
     BufferedReader in = new BufferedReader(new InputStreamReader(url.openStream()));
        String str;
        StringBuilder  buffer = new StringBuilder();
        while ((str = in.readLine()) != null) {
            buffer.append(str);
        }
        in.close();
        JSONObject obj = (JSONObject) ((JSONObject)JSONValue.parse(buffer.toString())).get("responseData");
        System.out.println(obj.get("language"));
        System.out.println(obj.get("confidence"));
    } catch (UnsupportedEncodingException e) {
        e.printStackTrace();
    } catch (MalformedURLException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }
}