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| | The SortedMap interface is a sub-interface of Map.
SortedMap is a map that further guarantees that it will be held in ascending key order, sorted according to the natural ordering of its keys (see the
Comparable interface), or by a comparator provided at sorted map creation time.
SortedMap adds the following methods to those specified by Map:
| Method |
Description |
comparator() |
Returns the comparator associated with this sorted map, or null if it
uses its keys' natural ordering. |
subMap(fromKey, toKey) |
Returns a view of the portion of this sorted map whose keys range from fromKey, inclusive, to toKey, exclusive. |
headMap(toKey) |
Returns a view of the portion of this sorted map whose keys are strictly less than
toKey. |
tailMap(fromKey) |
Returns a view of the portion of this sorted map whose keys are greater than or equal to
fromKey. |
firstKey() |
Returns the first (lowest) key currently in this sorted map. |
lastKey() |
Returns the last (highest) key currently in this sorted map. |
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