How to use

checkedSortedSet

method

in

java.util.Collections

 @Override
 public SortedSet<String> create(String[] elements) {
  SortedSet<String> innerSet = new TreeSet<>();
  Collections.addAll(innerSet, elements);
  return Collections.checkedSortedSet(innerSet, String.class);
 }
})

classes.add(Collections.checkedSet(Collections.emptySet(), Void.class).getClass());
classes.add(Collections.checkedSortedMap(Collections.emptySortedMap(), Void.class, Void.class).getClass());
classes.add(Collections.checkedSortedSet(Collections.emptySortedSet(), Void.class).getClass());

    String.class); // no equals impl
checkedSet = Collections.checkedSet(es, Size.class);
checkedSortedSet = Collections.checkedSortedSet(ts, String.class);
checkedList = Collections.checkedList(ll, String.class);
checkedRandomAccessList = Collections.checkedList(newList("nine"),

public SortedSet<E> headSet(E toElement) {
  return checkedSortedSet(ss.headSet(toElement), type);
}
public SortedSet<E> tailSet(E fromElement) {

  public SortedSet<E> tailSet(E fromElement) {
    return checkedSortedSet(ss.tailSet(fromElement), type);
  }
}

  public SortedSet<E> tailSet(E fromElement) {
    return checkedSortedSet(ss.tailSet(fromElement), type);
  }
}

public SortedSet<E> headSet(E toElement) {
  return checkedSortedSet(ss.headSet(toElement), type);
}
public SortedSet<E> tailSet(E fromElement) {

 @Override
 public SortedSet<String> create(String[] elements) {
  SortedSet<String> innerSet = new TreeSet<>();
  Collections.addAll(innerSet, elements);
  return Collections.checkedSortedSet(innerSet, String.class);
 }
})

public SortedSet<E> subSet(E fromElement, E toElement) {
  return checkedSortedSet(ss.subSet(fromElement,toElement), type);
}
public SortedSet<E> headSet(E toElement) {

public SortedSet<E> subSet(E fromElement, E toElement) {
  return checkedSortedSet(ss.subSet(fromElement,toElement), type);
}
public SortedSet<E> headSet(E toElement) {

classes.add(Collections.checkedSet(Collections.emptySet(), Void.class).getClass());
classes.add(Collections.checkedSortedMap(Collections.emptySortedMap(), Void.class, Void.class).getClass());
classes.add(Collections.checkedSortedSet(Collections.emptySortedSet(), Void.class).getClass());