# 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
  `final CountedCompleter<?>`
  CountedCompleter.`firstComplete()`
  If this task's pending count is zero, returns this task; otherwise decrements its pending count and returns `null`.
  `final CountedCompleter<?>`
  CountedCompleter.`getCompleter()`
  Returns the completer established in this task's constructor, or `null` if none.
  `final CountedCompleter<?>`
  CountedCompleter.`getRoot()`
  Returns the root of the current computation; i.e., this task if it has no completer, else its completer's root.
  `final 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 `CountedCompleter.tryComplete()` is invoked and the pending count is zero, or when the unconditional method `CountedCompleter.complete(T)` is invoked.
  `boolean`
  CountedCompleter.`onExceptionalCompletion(Throwable ex, CountedCompleter<?> caller)`
  Performs an action when method `ForkJoinTask.completeExceptionally(Throwable)` is invoked or method `CountedCompleter.compute()` throws an exception, and this task has not already otherwise completed normally.
  Constructors in java.util.concurrent with parameters of type CountedCompleter
  Modifier
  Constructor
  Description
  `protected`
  `CountedCompleter(CountedCompleter<?> completer)`
  Creates a new CountedCompleter with the given completer and an initial pending count of zero.
  `protected`
  `CountedCompleter(CountedCompleter<?> completer, int initialPendingCount)`
  Creates a new CountedCompleter with the given completer and initial pending count.