term frequency

[huda barakat]

I'm using SOLRJ to find term frequency for each term in a field, I wrote
this code but it is not working:


   1.         String urlString = "http://localhost:8983/solr/huda";;
   2.         SolrClient solr = new HttpSolrClient.Builder(urlString).build();
   3.
   4.         SolrQuery query = new SolrQuery();
   5.         query.setTerms(true);
   6.         query.addTermsField("name");
   7.         SolrRequest<QueryResponse> req = new QueryRequest(query);
   8.         QueryResponse rsp = req.process(solr);
   9.
   10.         System.out.println(rsp);
   11.
   12.         System.out.println("numFound: " +
rsp.getResults().getNumFound());
   13.
   14.         TermsResponse termResp =rsp.getTermsResponse();
   15.         List<TermsResponse.Term> terms = termResp.getTerms("name");
   16.         System.out.print(terms.size());


I got this error:

Exception in thread "main" java.lang.NullPointerException at
solr_test.solr.App2.main(App2.java:50)