Solrj - Official Solr client

Solrj is the official java client to access Solr. It offers a java interface to add, update, and query the solr index. SolrJ hides a lot of the details of connecting to Solr and allows your application to interact with Solr with simple high-level methods. The SolrJ API is included with Solr, so you do not have to download or install anything else.