N.J. Stat. Ann. § 30:4-177.32

2. The Department of Human Services therefore is authorized to establish, equip and maintain facilities in various parts of the State for receiving and treating juvenile delinquent probationers under circumstances where the Superior Court, Chancery Division, Family Part has directed, as a condition of probation of such offender that he voluntarily submit to treatment and supervision, for a period not to exceed four months, in a facility under direction, control and supervision of said department.