N.J. Stat. § 2A:62-18
Upon the application of either party, a jury trial shall be directed to try the validity of the claims made to the estate or interest, or to settle the facts, or any specified portion of the facts upon which the same depends.
When such jury trial is not requested, or as to the facts for which the same is not requested, the court shall proceed to inquire into and determine such claims, interest and estate, and shall, upon the verdict, or upon such inquiry and determination, finally settle and adjudge whether the defendant has any estate, interest or right in or encumbrance upon said estate in remainder in said lands or remainder interest in said personalty, or any part thereof, and what the same is and in or upon what part of said lands or personalty the same exists.
N.J.S. § 2A:62-18