# Uses of Class
java.util.concurrent.CountedCompleter

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

## Uses of CountedCompleter in java.util.concurrent

Methods in java.util.concurrent that return CountedCompleter
Modifier and Type | Method | Description
--- | --- | ---
`CountedCompleter<?>` | CountedCompleter.`firstComplete()` | If this task's pending count is zero, returns this task; otherwise decrements its pending count and returns `null`.
`CountedCompleter<?>` | CountedCompleter.`getCompleter()` | Returns the completer established in this task's constructor, or `null` if none.
`CountedCompleter<?>` | CountedCompleter.`getRoot()` | Returns the root of the current computation; i.e., this task if it has no completer, else its completer's root.
`CountedCompleter<?>` | CountedCompleter.`nextComplete()` | If this task does not have a completer, invokes `ForkJoinTask.quietlyComplete()` and returns `null`.

Methods in java.util.concurrent with parameters of type CountedCompleter
Modifier and Type | Method | Description
--- | --- | ---
`void` | CountedCompleter.`onCompletion​(CountedCompleter<?> caller)` | Performs an action when method `tryComplete()` is invoked and the pending count is zero, or when the unconditional method `complete(T)` is invoked.
`boolean` | CountedCompleter.`onExceptionalCompletion​(Throwable ex, CountedCompleter<?> caller)` | Performs an action when method `ForkJoinTask.completeExceptionally(Throwable)` is invoked or method `compute()` throws an exception, and this task has not already otherwise completed normally.

Constructors in java.util.concurrent with parameters of type CountedCompleter
Constructor | Description
--- | ---
`CountedCompleter​(CountedCompleter<?> completer)` | Creates a new CountedCompleter with the given completer and an initial pending count of zero.
`CountedCompleter​(CountedCompleter<?> completer, int initialPendingCount)` | Creates a new CountedCompleter with the given completer and initial pending count.