I have written used the below code in my apex class and got hte error : " Compile Error: sObject type 'NewsFeed' is not supported"
public List<NewsFeed> getNewsFeed()  {                                // Retrieving all feeds form Newsfeed
        List<NewsFeed> myfeed = [SELECT Id, Type,
                         CreatedById, CreatedBy.FirstName, CreatedBy.LastName,CreatedDate,
                         ParentId, Parent.Name, 
                         Body, Title, LinkUrl, ContentData, ContentFileName,
                             (SELECT Id, FieldName, OldValue, NewValue
                              FROM FeedTrackedChanges ORDER BY Id DESC), 
                             (SELECT Id, CommentBody, CreatedDate,
                              CreatedBy.FirstName, CreatedBy.LastName
                              FROM FeedComments ORDER BY CreatedDate LIMIT 10),
                             (SELECT CreatedBy.FirstName, CreatedBy.LastName
                              FROM FeedLikes)
                         FROM NewsFeed
                         ORDER BY CreatedDate DESC, Id DESC
                         LIMIT 20];
           return myfeed;
    }
 can anyone teel me solution to remove this error??