Android :: Deleting All Files

I have a game the allows the user to save the game in a file. I have a new update coming out the will make the previous saved games not work. Is the any way to delete all the files that my program created?

I have been serializing the games and saving them like this:

ObjectOutputStream os = new ObjectOutputStream(openFileOutput(gameName + ".sav", 0)); os.writeObject(gameObject);

I know I can go through the list of games and do something like this

for(GameName name : gameList) { deleteFile(name + ".sav");