SolrJ: clusters, labels, docs - search results

[okayndc]

Hello,

Was wondering how to access the cluster labels, and docs(ids) via SolrJ?

I have added the following:
           query.seParam("q", userQuery);
   query.setParam("clustering", true);
   query.setParam("qt", "/core2/clustering");
   query.setParam("carrot.title", "title");

But how to access the labels, docs in the clusters and display in a search
result?

Also, I've seen others specify clustering in this manner...

            ModifiableSolrParams params = new ModifiableSolrParams();
    params.set("qt", "/core2/clustering");
    params.set("q", userQuery);
    params.set("carrot.title", "title");
    params.set("clustering", "true");


Is this preferred over the other?

Thanks