It won't bite initially, it will bite when you go to update your version of javac in the future and this becomes the default. Or when you update a library that just so happened to be compiled with a newer version of javac.

This particularly matters when you have something likes this

    class Local {
       private final ThirdPartyObject tpo;
    }

or even something like this

    class Local {
      private final LocalDate ld;
    }