this is code from
refactoring
I just have one question. Does this violate OCP?
If yes, why he just write it like this?
else WHY it will be no I don’t understand

class Application is
    field dialog: Dialog

    // The application picks a creator's type depending on the
    // current configuration or environment settings.
    method initialize() is
        config = readApplicationConfigFile()

        if (config.OS == "Windows") then
            dialog = new WindowsDialog()
        else if (config.OS == "Web") then
            dialog = new WebDialog()
        else
            throw new Exception("Error! Unknown operating system.")`