I am having trouble folowing this http://hrycan.com/2012/03/28/primefaces-lazy-loading-datatable-for-jsf2/
It says I should just run
mvn jetty:run
Did you add the plugin to the pom.xml? A quick google search found this:
... ... org.codehaus.mojo jetty-maven-plugin
Found here: http://mojo.codehaus.org/jetty-maven-plugin/usage.html