Johnson, a standout at Bronx (N.Y.) St. Raymond, gave Sean Miller and his staff a verbal commitment late Saturday evening.
"Me and Sean Miller have a great relationship," Johnson said. "We talk a lot and when I went on the visit we hung out the entire time. He really made me feel like I was family."
"All the other schools that were recruiting me, I didn't really have a relationship with the head coach, but Sean Miller and the Arizona coaches went out of there way to build a relationship."
"I felt real comfortable there," Johnson said. "I had a relationship with them and my mom is cool with their coach and it just felt like home to me so I committed."
Johnson took a visit there a few months ago and feel in love with the campus and environment.
"It was a great place," he said. "It doesn't matter how far away from home I am. It's a great community, a great college atmosphere and the visit was great. I felt like I was at home."
Johnson is Arizona's first commitment of the 2011 recruiting class.