public virtual interface DemoInterface
{
         void go();
}

This code works fine if i write it inside in any apex class in org. But when I write this in developer console i get an error message as "Type is virtual by default in this context" This suggest that virtual is default keyword for interface!

public virtual interface DemoInterface
{
         void go();
}

This code works fine if i write it inside in any apex class in org. But when I write this in developer console i get an error message as "Type is virtual by default in this context" This suggest that virtual is default keyword for interface!So specifying virtual keyword for it is redundant.