I have released a beta snapshot version of a Java wrapper for the Stack Overflow API at http://code.google.com/p/stackoverflow-java-sdk/. Please try it and provide your feedback.

##Screenshot / Code Snippet
There are two different interfaces to the API. One is the query API which has a Builder like syntax.

        StackExchangeApiQueryFactory queryFactory = StackExchangeApiQueryFactory.newInstance("applicationKey");
        QuestionApiQuery query = queryFactory.newQuestionApiQuery();
        List<Question> questions = query.withSort(Question.SortOrder.HOT).withPaging(new Paging(1, 20)).withTimePeriod(new TimePeriod(new Date(), new Date())).withFetchOptions(EnumSet.of(FilterOption.INCLUDE_BODY, FilterOption.INCLUDE_COMMENTS)).list();

The other is a simple facade which exposes all the methods of the API.

        StackExchangeApiClientFactory factory = StackExchangeApiClientFactory.newInstance("applicationKey");
        StackExchangeApiClient client = factory.createStackOverflowApiClient();
        List<Question> questions = client.getQuestions(Question.SortOrder.HOT, new Paging(1, 20), new TimePeriod(new Date(), new Date()), EnumSet.of(FilterOption.INCLUDE_BODY, FilterOption.INCLUDE_COMMENTS));

The lists returned by both the methods are instances of PagedList which provide methods to aid in pagination of the result.

Note that, by default, the library uses Stack&nbsp;Overflow as the API provider. You can change that to use any other by:

        query.setApiProvider(new SuperUserApiProvider());
        client.setApiProvider(new SuperUserApiProvider());

The method AND class names somewhat map with the names in the API. In case of confusion, look in the examples directory of the distribution for more examples. I will be updating the [Javadoc][1] soon.

##About

stackoverflow-java-sdk is an open source library hosted at [Google Code][2]. I created this library to be used in an internal project. But it's comprehensive enough to be used by anyone looking to integrate with the API of Stack&nbsp;Overflow or partner sites.

###License

stackoverflow-java-sdk is open source with an Apache License 2.0.

###Download

You can download the library from Google Code at http://code.google.com/p/stackoverflow-java-sdk/.

###Platform

It's supported for any platform on which Java is supported which include [Google App Engine][3] and Android.

##Contact

Any issues can be filed on the [Google Code Issue tracking system][4]. 

##Code

The library is hosted at Google Code as a [Mercurial][5] repository. You can create a clone and get the code and make changes to it. 

To contribute to the main repository you will have to create an issue with a pull request with details of your changes. 

The library has one dependency on [Google GSON][6] which can be downloaded from http://code.google.com/p/google-gson/.

  [1]: http://en.wikipedia.org/wiki/Javadoc
  [2]: http://en.wikipedia.org/wiki/Google_Code
  [3]: http://en.wikipedia.org/wiki/Google_App_Engine
  [4]: http://code.google.com/p/stackoverflow-java-sdk/issues/list
  [5]: http://en.wikipedia.org/wiki/Mercurial
  [6]: http://en.wikipedia.org/wiki/GSON