N.J. Stat. § 2A:39-2
If any person shall enter upon or into any real property and detain or hold the same with force, whether or not any person be in it, by any kind of violence whatsoever, or by threatening to kill, maim or beat the party in possession, or by such words, circumstances or action as have a natural tendency to excite fear or apprehension of danger, or by putting out of doors, or carrying away the goods of the party in possession, or by entering peaceably and then, by force or frightening by threats, or by other circumstances of terror, turning the party out of possession, such person shall be guilty of a forcible entry and detainer within the meaning of this chapter. With regard to any real property occupied solely as a residence by the party in possession, if any person shall enter upon or into said property and detain or hold same in any manner without the consent of the party in possession unless the entry is made pursuant to legal process as set out in N.J.S. 2A:18-53 et seq. or 2A:35-1 et seq., such person shall be guilty of an unlawful entry and detainer within the meaning of this chapter.
N.J.S. § 2A:39-2