"I would like to say to the court, I'm sorry," he told the judge.
The Adams assault took place while Brown was on probation for his 2009 assault of Rihanna. He served two days in a D.C. jail following his arrest, and served additional time in California for violating his probation. The singer's attorney, Danny Onorato, declared his client has already been "punished severely," and said he "learned" from his actions.
Brown is on probation for the Rihanna assault until 2015, and has 500 hours of community service left to complete in his California sentence.
Notable deaths of 2014 [PHOTOS]
Miley Cyrus made new face of MAC Viva Glam