Absorb these posts:
http://pietervogelaar.nl/ubuntu-12-04-install-jetty-9/
http://pietervogelaar.nl/ubuntu-12-04-install-solr-4-with-jetty-9/
…be sure to copy solr-4.3.1/dist/solrj-lib/* to /opt/jetty/lib/etc
Absorb these posts:
http://pietervogelaar.nl/ubuntu-12-04-install-jetty-9/
http://pietervogelaar.nl/ubuntu-12-04-install-solr-4-with-jetty-9/
…be sure to copy solr-4.3.1/dist/solrj-lib/* to /opt/jetty/lib/etc