## Uses of Class
java.util.AbstractQueue

Packages that use AbstractQueue
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.

### Uses of AbstractQueue in java.util

Subclasses of AbstractQueue in java.util
`class` `PriorityQueue<E>` An unbounded priority queue based on a priority heap.

### Uses of AbstractQueue in java.util.concurrent

Subclasses of AbstractQueue in java.util.concurrent
`class` `ArrayBlockingQueue<E>` A bounded blocking queue backed by an array.
`class` `ConcurrentLinkedQueue<E>` An unbounded thread-safe queue based on linked nodes.
`class` `DelayQueue<E extends Delayed>` An unbounded blocking queue of `Delayed` elements, in which an element can only be taken when its delay has expired.
`class` `LinkedBlockingDeque<E>` An optionally-bounded blocking deque based on linked nodes.
`class` `LinkedBlockingQueue<E>` An optionally-bounded blocking queue based on linked nodes.
`class` `LinkedTransferQueue<E>` An unbounded `TransferQueue` based on linked nodes.
`class` `PriorityBlockingQueue<E>` An unbounded blocking queue that uses the same ordering rules as class `PriorityQueue` and supplies blocking retrieval operations.
`class` `SynchronousQueue<E>` A blocking queue in which each insert operation must wait for a corresponding remove operation by another thread, and vice versa.