|
| |
| Java Collection Framework - Sorted Map Interface |
The Collection Framework provides
a special Map interface for maintaining
elements in a sorted order called
SortedMap.
The interface provides access methods
to the ends of the map as well to
subsets of the set. Working with a
SortedMap is just like a SortedSet,
except the sort is done on the map
keys. The implementation class provided
by the Collection Framework is a TreeMap.
Comparator
|
comparator()
Returns the comparator associated
with this sorted map, or null if it uses its keys' natural ordering.
|
Object
|
firstKey()
Returns the first (lowest) key
currently in this sorted map.
|
SortedMap
|
headMap(Object toKey)
Returns a view of the portion
of this sorted map whose keys
are strictly less than toKey.
|
Object
|
lastKey()
Returns the last (highest) key
currently in this sorted map.
|
SortedMap
|
subMap(Object fromKey, Object toKey)
Returns a view of the portion
of this sorted map whose keys
range from fromKey,
inclusive, to toKey,
exclusive.
|
SortedMap
|
tailMap(Object fromKey)
Returns a view of the portion
of this sorted map whose keys
are greater than or equal to fromKey.
|
Explore
the other Interface and Classes of
Java Collection Framework
Collection
Interface
Iterator
Interface
Set
Interface
List
Interface
ListIterator
Interface
Map
Interface
SortedSet
Interface
SortedMap
Interface
HashSet
& TreeSet Classes
ArrayList
& LinkedList Classes
HashMap
& Treemap Classes
Vector
and Stack Classes
|
|
