Where to set result limit using SolrServer interface?

[Jörg Kiegeland]

I have a query

       SolrServer server = getSolrServer();
       SolrQuery solrQuery = new SolrQuery();
       solrQuery.setQuery(..);
       QueryResponse rsp = server.query(solrQuery);
Now where can I set the result limit for this query?

Another question : Where can I download the test cases for Solrj 
mentioned in the Solr 1.3 wiki?

Thanks

Jörg