## Uses of Interface
java.util.NavigableMap

- Packages that use NavigableMap
  Package | Description
  --- | ---
  java.util |
  java.util.concurrent | Utility classes commonly useful in concurrent programming.

- - ### Uses of NavigableMap in java.util

    Classes in java.util that implement NavigableMap
    Modifier and Type | Class and Description
    --- | ---
    `class` | `TreeMap<K,V>` A Red-Black tree based `NavigableMap` implementation.

    Methods in java.util that return NavigableMap
    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`.

  - ### Uses of NavigableMap in java.util.concurrent

    Subinterfaces of NavigableMap in java.util.concurrent
    Modifier and Type | Interface and 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 and Description
    --- | ---
    `class` | `ConcurrentSkipListMap<K,V>` A scalable concurrent `ConcurrentNavigableMap` implementation.

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