If an inmate goes to court and the judge orders the release of the inmate then it can take up to 8 hours for the paperwork to be done and then the inmate is released.
So you don't get released from jail immediately after the judge says you're free to go since if you're already in jail and wearing your jail uniform you go back to the jail and then wait there for 6 to 8 hours while your paperwork is being done.
But sometimes you may not be released until the next day even depending on how much paperwork needs to be done before they get to yours.
Even when you post bail it can take another 6 to 8 hours for the inmate to be released from jail so you don't get immediately get released either way.