java/util/Collections.java

1168         public SortedSet<E> subSet(E fromElement, E toElement) {
1169             return new UnmodifiableSortedSet<>(ss.subSet(fromElement,toElement));
1171         public SortedSet<E> headSet(E toElement) {
1172             return new UnmodifiableSortedSet<>(ss.headSet(toElement));
1255         public NavigableSet<E> subSet(E fromElement, boolean fromInclusive, E toElement, boolean toInclusive) {
1257                 ns.subSet(fromElement, fromInclusive, toElement, toInclusive));
1260         public NavigableSet<E> headSet(E toElement, boolean inclusive) {
1262                 ns.headSet(toElement, inclusive));
2213         public SortedSet<E> subSet(E fromElement, E toElement) {
2216                     ss.subSet(fromElement, toElement), mutex);
2219         public SortedSet<E> headSet(E toElement) {
2221                 return new SynchronizedSortedSet<>(ss.headSet(toElement), mutex);
2319         public NavigableSet<E> subSet(E fromElement, E toElement) {
2321                 return new SynchronizedNavigableSet<>(ns.subSet(fromElement, true, toElement, false), mutex);
2324         public NavigableSet<E> headSet(E toElement) {
2326                 return new SynchronizedNavigableSet<>(ns.headSet(toElement, false), mutex);
2335         public NavigableSet<E> subSet(E fromElement, boolean fromInclusive, E toElement, boolean toInclusive) {
2337                 return new SynchronizedNavigableSet<>(ns.subSet(fromElement, fromInclusive, toElement, toInclusive), mutex);
2341         public NavigableSet<E> headSet(E toElement, boolean inclusive) {
2343                 return new SynchronizedNavigableSet<>(ns.headSet(toElement, inclusive), mutex);
3295         public SortedSet<E> subSet(E fromElement, E toElement) {
3296             return checkedSortedSet(ss.subSet(fromElement,toElement), type);
3298         public SortedSet<E> headSet(E toElement) {
3299             return checkedSortedSet(ss.headSet(toElement), type);
3365         public NavigableSet<E> subSet(E fromElement, E toElement) {
3366             return checkedNavigableSet(ns.subSet(fromElement, true, toElement, false), type);
3368         public NavigableSet<E> headSet(E toElement) {
3369             return checkedNavigableSet(ns.headSet(toElement, false), type);
3375         public NavigableSet<E> subSet(E fromElement, boolean fromInclusive, E toElement, boolean toInclusive) {
3376             return checkedNavigableSet(ns.subSet(fromElement, fromInclusive, toElement, toInclusive), type);
3379         public NavigableSet<E> headSet(E toElement, boolean inclusive) {
3380             return checkedNavigableSet(ns.headSet(toElement, inclusive), type);