Johnson, a seven-time All-Star, will be competing in the event for the first time. He is shooting 38.9 percent from 3-point range this season.
Asked if he was surprised, Johnson replied, "Nah. I've known about it. We'll see what happens. ... I'm excited.”
Johnson is the third Nets player to compete in the 3-point contest, joining Anthony Morrow (2012) and the late Drazen Petrovic (1992).