Uses of Interface java.util.concurrent.Delayed (Java SE 12 & JDK 12 )

## Uses of Interface
java.util.concurrent.Delayed

- Packages that use Delayed
  Package | Description
  --- | ---
  java.util.concurrent | Utility classes commonly useful in concurrent programming.

- - ### Uses of Delayed in java.util.concurrent

    Classes in java.util.concurrent with type parameters of type Delayed
    Modifier and Type | Class | Description
    --- | --- | ---
    `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.

    Subinterfaces of Delayed in java.util.concurrent
    Modifier and Type | Interface | Description
    --- | --- | ---
    `interface` | `RunnableScheduledFuture<V>` | A `ScheduledFuture` that is `Runnable`.
    `interface` | `ScheduledFuture<V>` | A delayed result-bearing action that can be cancelled.