"Napolitano is the youngest life-tenured Superior Court Judge in the history of the State of New Jersey. While on the bench from 1987 to 1995, Judge Napolitano tried over 150 jury trials, and sat in all parts of the Superior Court — Criminal, Civil, Equity and Family.
For eleven years, Napolitano served as an adjunct professor at Seton Hall Law School, where he taught constitutional law and jurisprudence. He returned to private law practice in 1995, the same year he began his career in broadcasting."
The above is from his bio at Fox News