java - How to call methods of a nested interface -

i have interface iouter , nested interface iinner. like

interface iouter {    public void outera();    interface iinner {       public void innera();    } } 

both iouter , iinner having setter api's.
made nested interface because setter api's valid inner interface.
both outer , inner interface implemented in single class not exposed outside world.
outside application interacting our code through interface iouter. problem since don't have object of nested interface not able call nested interface api's.
don't want move nested interface api's outer interface might misunderstood.

you can implement both iouter , iinner interfaces. example:

public class test implements iouter, iouter.iinner {     @override     public void outera() {      }      @override     public void innera() {      } }