N.J. Stat. § 2C:52-6.1
On the first day of the fifth month next following the effective date of P.L. 2021, c. 19(C.24:2I-31 et al.), any case that, prior to that effective date, includes a conviction or adjudication of delinquency solely for one or more crimes or offenses involving manufacturing, distributing, or dispensing, or possessing or having under control with intent to manufacture, distribute, or dispense, marijuana or hashish in violation of paragraph (12) of subsection b. of N.J.S. 2C:35-5, or obtaining, possessing, using, being under the influence of, or failing to make lawful disposition of marijuana or hashish in violation of paragraph (3) or (4) of subsection a., or subsection b., or subsection c. of N.J.S. 2C:35-10, or a violation involving marijuana or hashish as described herein and a violation of N.J.S. 2C:36-2 for using or possessing with intent to use drug paraphernalia with that marijuana or hashish, alone or in combination with each other, or any disorderly persons offense or petty disorderly persons offense subject to conditional discharge pursuant to N.J.S. 2C:36A-1, shall be expunged by operation of law, and any remaining sentence, ongoing supervision, or unpaid court-ordered financial assessment as defined in section 8 of P.L. 2017, c. 244(C.2C:52-23.1) shall be vacated by operation of law. The Administrative Director of the Courts, in consultation with the Attorney General, may take any administrative action as may be necessary to expeditiously effectuate the expungement of records associated with any expunged matter.
N.J.S. § 2C:52-6.1