Shirakawa was sentenced to one year in jail.
In March, Shirakawa pleaded guilty to the misuse of more than $100,000 of public funds.
The defense made a case to the court for no jail time, saying he's no criminal, just a gambling addict.
Once Shirakawa is out of jail, he'll be on probation for three years.
He's also banned from holding public office in California for the rest of his life.