N.J. Stat. § 2A:16-53: Questions determinable and rights declarable

A person interested under a deed, will, written contract or other writing constituting a contract, or whose rights, status or other legal relations are affected by a statute, municipal ordinance, contract or franchise, may have determined any question of construction or validity arising under the instrument, statute, ordinance, contract or franchise and obtain a declaration of rights, status or other legal relations thereunder.

L.1951 (1st SS), c.344