Uses of Package
java.util.concurrent

Packages that use java.util.concurrent

Package	Description
java.util.concurrent	Utility classes commonly useful in concurrent programming.
java.util.concurrent.locks	Interfaces and classes providing a framework for locking and waiting for conditions that is distinct from built-in synchronization and monitors.

Classes in java.util.concurrent used by java.util.concurrent

Class and Description
AbstractExecutorService Provides default implementations of ExecutorService execution methods.
BlockingDeque A Deque that additionally supports blocking operations that wait for the deque to become non-empty when retrieving an element, and wait for space to become available in the deque when storing an element.
BlockingQueue A Queue that additionally supports operations that wait for the queue to become non-empty when retrieving an element, and wait for space to become available in the queue when storing an element.
BrokenBarrierException Exception thrown when a thread tries to wait upon a barrier that is in a broken state, or which enters the broken state while the thread is waiting.
Callable A task that returns a result and may throw an exception.
CompletionService A service that decouples the production of new asynchronous tasks from the consumption of the results of completed tasks.
ConcurrentMap A Map providing additional atomic putIfAbsent, remove, and replace methods.
ConcurrentNavigableMap A ConcurrentMap supporting NavigableMap operations, and recursively so for its navigable sub-maps.
ConcurrentSkipListMap A scalable concurrent ConcurrentNavigableMap implementation.
ConcurrentSkipListSet A scalable concurrent NavigableSet implementation based on a ConcurrentSkipListMap.
Delayed A mix-in style interface for marking objects that should be acted upon after a given delay.
ExecutionException Exception thrown when attempting to retrieve the result of a task that aborted by throwing an exception.
Executor An object that executes submitted Runnable tasks.
ExecutorService An Executor that provides methods to manage termination and methods that can produce a Future for tracking progress of one or more asynchronous tasks.
ForkJoinPool An ExecutorService for running ForkJoinTasks.
ForkJoinPool.ForkJoinWorkerThreadFactory Factory for creating new ForkJoinWorkerThreads.
ForkJoinPool.ManagedBlocker Interface for extending managed parallelism for tasks running in ForkJoinPools.
ForkJoinTask Abstract base class for tasks that run within a ForkJoinPool.
ForkJoinWorkerThread A thread managed by a ForkJoinPool, which executes ForkJoinTasks.
Future A Future represents the result of an asynchronous computation.
Phaser A reusable synchronization barrier, similar in functionality to CyclicBarrier and CountDownLatch but supporting more flexible usage.
RejectedExecutionHandler A handler for tasks that cannot be executed by a ThreadPoolExecutor.
RunnableFuture A Future that is Runnable.
RunnableScheduledFuture A ScheduledFuture that is Runnable.
ScheduledExecutorService An ExecutorService that can schedule commands to run after a given delay, or to execute periodically.
ScheduledFuture A delayed result-bearing action that can be cancelled.
ThreadFactory An object that creates new threads on demand.
ThreadLocalRandom A random number generator isolated to the current thread.
ThreadPoolExecutor An ExecutorService that executes each submitted task using one of possibly several pooled threads, normally configured using Executors factory methods.
TimeoutException Exception thrown when a blocking operation times out.
TimeUnit A TimeUnit represents time durations at a given unit of granularity and provides utility methods to convert across units, and to perform timing and delay operations in these units.
TransferQueue A BlockingQueue in which producers may wait for consumers to receive elements.

Classes in java.util.concurrent used by java.util.concurrent.locks

Class and Description
TimeUnit A TimeUnit represents time durations at a given unit of granularity and provides utility methods to convert across units, and to perform timing and delay operations in these units.