# 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 well-defined encounter 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
  `final 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.