The iterators returned by the iterator method of the collections SortedMap m = Collections.synchronizedSortedMap(new TreeMap(.)) This is best done at creation time, to prevent accidental If no such object exists, the map should be "wrapped" using the Typically accomplished by synchronizing on some object that naturally
With an existing key is not a structural modification.) This is (A structural modification is any operation that adds orĭeletes one or more mappings merely changing the value associated Threads modifies the map structurally, it must be synchronizedĮxternally. If multiple threads access a map concurrently, and at least one of the Note that this implementation is not synchronized. Inconsistent with equals it just fails to obey the general contract Of a sorted map is well-defined even if its ordering is This method are, from the standpoint of the sorted map, equal. Operation, but a sorted map performs all key comparisons using its compareTo (or compare) method, so two keys that are deemed equal by The Map interface is defined in terms of the equals Precise definition of consistent with equals.) This is so because With equals if this sorted map is to correctly implement the Whether or not an explicit comparator is provided, must be consistent Note that the ordering maintained by a tree map, like any sorted map, and Algorithms are adaptations of those in Cormen, Leiserson, and This implementation provides guaranteed log(n) time cost for the
Ordering of its keys, or by a Comparator provided at mapĬreation time, depending on which constructor is used. The map is sorted according to the natural A Red-Black tree based NavigableMap implementation.
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