## Uses of Class
java.util.AbstractMap

- Packages that use AbstractMap
  Package | Description
  --- | ---
  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.
  javax.print.attribute.standard | Package `javax.print.attribute.standard` contains classes for specific printing attributes.

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

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

  - ### Uses of AbstractMap in javax.print.attribute.standard

    Subclasses of AbstractMap in javax.print.attribute.standard
    Modifier and Type | Class | Description
    --- | --- | ---
    `class` | `PrinterStateReasons` | Class `PrinterStateReasons` is a printing attribute class, a set of enumeration values, that provides additional information about the printer's current state, i.e., information that augments the value of the printer's `PrinterState` attribute.