# 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.