"I'm solid. It's a solid verbal commitment to UCF, so that's where I'm going."
Before announcing his decision, Bostic told the South Florida Sun-Sentinel about his top three schools.
"UCF -- great program that is on the rise," Bostic said. "I love the fact that I have a great relationship with the coaches and the location is ideal.
"Princeton -- great education and the coaches really are showing great interest in me. I have a great chance to compete for the starting job as a freshman.
"Dartmouth -- beautiful campus and another great education. I also have a great chance to compete early for the starting job."
Bostic announced he was committing to UCF during a press conference with his best friend, Jupiter High quarterback Tyler Cameron, Tuesday afternoon. Cameron, who is rated a four-star prospect by Rivals.com, committed to USF.
Bostic and Johnson both could have easily headed out of state to play football, but they ultimately couldn't pass up a chance to play close to home.
Johnson, who is rated a three-star prospect by recruiting website Rivals.com, held offers from N.C. State, Purdue, Ball State, Bowling Green, Cincinnati, FAU, FIU, Indiana, Marshall, Memphis and Temple.
Bostic and Johnson are the second and third commitments of UCF's 2012 recruiting class. The Knights are projected to have a relatively small recruiting class, without about 12-14 slots available for new players. UCF has been selective in offering scholarships, targeting some highly rated recruits who typically don't announce decisions until close to National Signing Day in February.
Johnson said his relationship with the UCF coaches, the UCF facilities and current players on the UCF football team all helped sell him on the school. Johnson said he was looking forward to the opportunity to being on the same team as sophomore quarterback Jeff Godfrey.
"He's a real good quarterback," Johnson said. "That's what you need."
Johnson is hoping to bring more talent with him to UCF. He rattled off a long list of Orlando area players, including Edgewater's Alton Howard and Karl Joseph, who he hopes will join him at UCF.
"I'm trying to make it happen," Johnson said of convincing other highly-rated Orlando players to pick the Knights. "We're the dream team. That'd be nice to all be up there together."
He said he is "100 percent" committed to UCF and looking forward to playing college football in Orlando so that his family can watch his games.
Johnson said he is focusing on completing a strong senior season and working toward graduating in December so that he can enroll at UCF in January and participate in 2012 spring football workouts.
"I'm happy," he said. "The coaches really showed me that they wanted me. They want me to come to UCF, and I want to play for them."
Once he gets to UCF, Johnson said he wants to help build on the Knights' recent success.
"I want to go win championships," he said. "I want to keep winning bowl games and stay in the Top 25."