In many places with information on J-1 I read that the validity period of the J-1 visa may not coincide with the validity of the DS-2019 form that indicates the start and end date of the program; and that status (being allowed to be in the US) differs from visa (being allowed to enter the US).
I could not find any information, though, on how long a J-1 visa is going to be (typically) valid.
Does anyone have some experience here? For example, with a DS-2019 that specifies a program duration of one years, how long will the issued visa be valid? What if the program specifies two years?