import java.util.Arrays;
import java.util.Collections;
import java.util.List;

public class Main {
    public static void main(String[] args) {
        List<String> names = Arrays.asList("peter", "anna", "mike", "xenia");

        Collections.sort(names, (String a, String b) -> {
            return b.compareTo(a);
        });
    }

    @FunctionalInterface
    interface Converter<F, T> {
        T convert(F from);
    }
}