He told Scout.com about it Sunday but said he wanted to wait to release because he needed to tell other schools.
"It's cool," Denman said of releasing the information. "You can announce it on Scout."
He adds to a strong Rutgers offensive line class that already includes Boyertown (Pa.) High's Chris Muller, Archbishop Wood High's (Warminster, Pa.) Brandon Arcidiacono and Archbishop Carroll High's (Washington, D.C.) Derrick Nelson. Also, Long Branch (N.J.) High offensive tackle Ryan Brodie is announcing his decision Wednesday at 2 p.m. after trimming his list to Connecticut and Rutgers.
Denman, who lives an hour from Rutgers' campus, made an official visit over the weekend. He began looking around after several members of Wisconsin's coaching staff, including Badgers offensive line coach Bob Bostad, left for Pittsburgh.
Denman made an official visit to Pittsburgh the weekend of Jan. 13, and he was slated to visit Penn State on Wednesday and Wisconsin over the weekend.
His commitment cannot become binding until Feb. 1 national letter of intent day.
"J.J. is a great addition to the Class of 2012," Muller said. "Him being a good friend of mine, I'm happy that he made the right decision. We're going to live up to the expectations of this class and achieve greatness with all of the people associated with it."
Scout.com will have more on this developing story shortly