| Package | Description |
|---|---|
| java.util |
Contains the collections framework, legacy collection classes, event model,
date and time facilities, internationalization, and miscellaneous utility
classes (a string tokenizer, a random-number generator, and a bit array).
|
| java.util.concurrent |
Utility classes commonly useful in concurrent programming.
|
| Modifier and Type | Class and Description |
|---|---|
class |
TreeMap<K,V>
A Red-Black tree based
NavigableMap implementation. |
| Modifier and Type | Method and Description |
|---|---|
NavigableMap<K,V> |
TreeMap.descendingMap() |
NavigableMap<K,V> |
NavigableMap.descendingMap()
Returns a reverse order view of the mappings contained in this map.
|
NavigableMap<K,V> |
TreeMap.headMap(K toKey,
boolean inclusive) |
NavigableMap<K,V> |
NavigableMap.headMap(K toKey,
boolean inclusive)
Returns a view of the portion of this map whose keys are less than (or
equal to, if
inclusive is true) toKey. |
NavigableMap<K,V> |
TreeMap.subMap(K fromKey,
boolean fromInclusive,
K toKey,
boolean toInclusive) |
NavigableMap<K,V> |
NavigableMap.subMap(K fromKey,
boolean fromInclusive,
K toKey,
boolean toInclusive)
Returns a view of the portion of this map whose keys range from
fromKey to toKey. |
NavigableMap<K,V> |
TreeMap.tailMap(K fromKey,
boolean inclusive) |
NavigableMap<K,V> |
NavigableMap.tailMap(K fromKey,
boolean inclusive)
Returns a view of the portion of this map whose keys are greater than (or
equal to, if
inclusive is true) fromKey. |
| Modifier and Type | Interface and Description |
|---|---|
interface |
ConcurrentNavigableMap<K,V>
A
ConcurrentMap supporting NavigableMap operations,
and recursively so for its navigable sub-maps. |
| Modifier and Type | Class and Description |
|---|---|
class |
ConcurrentSkipListMap<K,V>
A scalable concurrent
ConcurrentNavigableMap implementation. |
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For further API reference and developer documentation, see Java SE Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.
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