## Uses of Class
java.util.AbstractMap

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

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

    Subclasses of AbstractMap in java.util
    Modifier and Type | Class and Description
    --- | ---
    `class` | `EnumMap<K extends Enum<K>,V>` A specialized `Map` implementation for use with enum type keys.
    `class` | `HashMap<K,V>` Hash table based implementation of the `Map` interface.
    `class` | `IdentityHashMap<K,V>` This class implements the `Map` interface with a hash table, using reference-equality in place of object-equality when comparing keys (and values).
    `class` | `LinkedHashMap<K,V>` Hash table and linked list implementation of the `Map` interface, with predictable iteration order.
    `class` | `TreeMap<K,V>` A Red-Black tree based `NavigableMap` implementation.
    `class` | `WeakHashMap<K,V>` Hash table based implementation of the `Map` interface, with weak keys.

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

    Subclasses of AbstractMap in java.util.concurrent
    Modifier and Type | Class and Description
    --- | ---
    `class` | `ConcurrentHashMap<K,V>` A hash table supporting full concurrency of retrievals and adjustable expected concurrency for updates.
    `class` | `ConcurrentSkipListMap<K,V>` A scalable concurrent `ConcurrentNavigableMap` implementation.

Copyright © 2025 API Design. All Rights Reserved.