N.J. Stat. § 2C:1-5

a. Common law crimes are abolished and no conduct constitutes an offense unless the offense is defined by this code or another statute of this State. b. The provisions of subtitle 1 of the code are applicable to offenses defined by other statutes. The provisions of subtitle 3 are applicable to offenses defined by other statutes but the maximum penalties applicable to such offenses, if specifically provided in the statute defining such offenses, shall be as provided therein, rather than as provided in this code, except that if the non-code offense is a misdemeanor with a maximum penalty of more than 18 months imprisonment, the provisions of section 2C:43-1b shall apply. c. This section does not affect the power to punish for contempt, either summarily or after indictment, or to employ any sanction authorized by law for the enforcement of an order or a civil judgment or decree. d. Notwithstanding any other provision of law, the local governmental units of this State may neither enact nor enforce any ordinance or other local law or regulation conflicting with, or preempted by, any provision of this code or with any policy of this State expressed by this code, whether that policy be expressed by inclusion of a provision in the code or by exclusion of that subject from the code. L.1978, c. 95, s. 2C:1-5, eff. Sept. 1, 1979. Amended by L.1979, c. 178, s. 4, eff. Sept. 1, 1979.