## Uses of Interface
java.util.NavigableMap

Packages that use NavigableMap
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.

### 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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