Overriding default methods - performance impact?

[Andy Seaborne]

I see ava.time.chrono.LocalDateTime:

@Override  // override for Javadoc and performance
    public String format(DateTimeFormatter formatter) {
        Objects.requireNonNull(formatter, "formatter");
        return formatter.format(this);
    }

which is overriding the interface ChronoLocalDate which has a default method

    default String format(DateTimeFormatter formatter) {
        Objects.requireNonNull(formatter, "formatter");
        return formatter.format(this);
    }


How much performance difference does this make?

        Andy