# Uses of Interface
java.util.NavigableMap

Packages that use NavigableMap
Package
Description
java.time.zone
Support for time-zones and their rules.
java.util
Contains the collections framework, some internationalization support classes, a service loader, properties, random number generation, string parsing and scanning classes, base64 encoding and decoding, a bit array, and several miscellaneous utility classes.
java.util.concurrent
Utility classes commonly useful in concurrent programming.

## Uses of NavigableMap in java.time.zone

Methods in java.time.zone that return NavigableMap
Modifier and Type
Method
Description
`static NavigableMap<String,ZoneRules>`
ZoneRulesProvider.`getVersions(String zoneId)`
Gets the history of rules for the zone ID.
`protected abstract NavigableMap<String,ZoneRules>`
ZoneRulesProvider.`provideVersions(String zoneId)`
SPI method to get the history of rules for the zone ID.

## Uses of NavigableMap in java.util

Classes in java.util that implement NavigableMap
Modifier and Type
Class
Description
`class`
`TreeMap<K,V>`
A Red-Black tree based `NavigableMap` implementation.
Methods in java.util that return NavigableMap
Modifier and Type
Method
Description
`static <K, V> NavigableMap<K,V>`
Collections.`checkedNavigableMap(NavigableMap<K,V> m, Class<K> keyType, Class<V> valueType)`
Returns a dynamically typesafe view of the specified navigable map.
`NavigableMap<K,V>`
NavigableMap.`descendingMap()`
Returns a reverse order view of the mappings contained in this map.
`NavigableMap<K,V>`
TreeMap.`descendingMap()`
`static final <K, V> NavigableMap<K,V>`
Collections.`emptyNavigableMap()`
Returns an empty navigable map (immutable).
`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.`headMap(K toKey, boolean inclusive)`
`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.`subMap(K fromKey, boolean fromInclusive, K toKey, boolean toInclusive)`
`static <K, V> NavigableMap<K,V>`
Collections.`synchronizedNavigableMap(NavigableMap<K,V> m)`
Returns a synchronized (thread-safe) navigable map backed by the specified navigable map.
`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`.
`NavigableMap<K,V>`
TreeMap.`tailMap(K fromKey, boolean inclusive)`
`static <K, V> NavigableMap<K,V>`
Collections.`unmodifiableNavigableMap(NavigableMap<K,? extends V> m)`
Returns an unmodifiable view of the specified navigable map.
Methods in java.util with parameters of type NavigableMap
Modifier and Type
Method
Description
`static <K, V> NavigableMap<K,V>`
Collections.`checkedNavigableMap(NavigableMap<K,V> m, Class<K> keyType, Class<V> valueType)`
Returns a dynamically typesafe view of the specified navigable map.
`static <K, V> NavigableMap<K,V>`
Collections.`synchronizedNavigableMap(NavigableMap<K,V> m)`
Returns a synchronized (thread-safe) navigable map backed by the specified navigable map.
`static <K, V> NavigableMap<K,V>`
Collections.`unmodifiableNavigableMap(NavigableMap<K,? extends V> m)`
Returns an unmodifiable view of the specified navigable map.

## Uses of NavigableMap in java.util.concurrent

Subinterfaces of NavigableMap in java.util.concurrent
Modifier and Type
Interface
Description
`interface`
`ConcurrentNavigableMap<K,V>`
A `ConcurrentMap` supporting `NavigableMap` operations, and recursively so for its navigable sub-maps.
Classes in java.util.concurrent that implement NavigableMap
Modifier and Type
Class
Description
`class`
`ConcurrentSkipListMap<K,V>`
A scalable concurrent `ConcurrentNavigableMap` implementation.