N.J. Stat. Ann. § 2A:24-3

Where a party is aggrieved by the failure, neglect or refusal of another to perform under a written agreement providing for arbitration, the Superior Court may in a summary action direct that the arbitration proceed in the manner provided for in the agreement. The party alleged to be in default may demand a jury trial as to the issue that there has been no agreement in writing for an arbitration or that there has been no failure to comply therewith.