With the new FilteredList and SortedList in jdk8 b89, the old SortableList and FilterableList interface are gone. However I still suggest bringing the old interfaces back with some modifications. See below for suggested code. These interfaces will allow us to implement our own implementations of FilterableList and SortableList, for example, use database to do the filtering and sorting.

public interface SortableList<E> extends List<E> {
    public void sort();
    public void setComparator(Comparator<? super E> c);
    public Comparator<? super E> getComparator();
}

public interface FilterableList<E> extends List<E> {
    public void filter();
    public void setPredicate(Predicate<? super E> m);
    public Predicate<? super E> getPredicate();
}