# Uses of Class
java.util.AbstractSet

Packages that use AbstractSet
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 AbstractSet in java.util

Subclasses of AbstractSet in java.util
Modifier and Type | Class | Description
--- | --- | ---
`class` | `EnumSet<E extends Enum<E>>` | A specialized `Set` implementation for use with enum types.
`class` | `HashSet<E>` | This class implements the `Set` interface, backed by a hash table (actually a `HashMap` instance).
`class` | `LinkedHashSet<E>` | Hash table and linked list implementation of the `Set` interface, with predictable iteration order.
`class` | `TreeSet<E>` | A `NavigableSet` implementation based on a `TreeMap`.

## Uses of AbstractSet in java.util.concurrent

Subclasses of AbstractSet in java.util.concurrent
Modifier and Type | Class | Description
--- | --- | ---
`class` | `ConcurrentSkipListSet<E>` | A scalable concurrent `NavigableSet` implementation based on a `ConcurrentSkipListMap`.
`class` | `CopyOnWriteArraySet<E>` | A `Set` that uses an internal `CopyOnWriteArrayList` for all of its operations.

## Uses of AbstractSet in javax.print.attribute.standard

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