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Raab, Donald Donald.Raab at gs.com
Wed Dec 26 07:46:43 PST 2012

We have methods to toSortedSet() and toSortedMap() that return SortedSet and SortedMap (as the names imply). We remain compatible back to Java 5, where NavigableSet and NavigableMap do not exist.

I would request either calling the methods toNavigableSet()/toNavigableMap() and returning NavigableSet/NavigableMap or having both toSorted and toNavigable forms and returning the appropriately named types.

Object[] toArray(); Set toSet(); List toList(); List toRandomAccessList(); List toSortedList(Comparator<? super T> comparator); List toSortedList(); NavigableSet toSortedSet(); NavigableSet toSortedSet(Comparator<? super T> comparator); Collection toBag(); // unordered, possible dups Map<K,T> toMap(Function<? super T,K> keyFn, BinaryOperator mergeFn); Map<K,<Collection> toMap(Function<? super T,K> keyFn); NavigableMap<K,T> toSortedMap(Function<? super T,K> keyFn, Comparator<? super K> comparator, BinaryOperator mergeFn); NavigableMap<K,Collection> toSortedMap(Function<? super T,K> keyFn, Comparator<? super K> comparator);

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