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

Packages that use ExecutorService
java.nio.channels: Defines channels, which represent connections to entities that are capable of performing I/O operations, such as files and sockets; defines selectors, for multiplexed, non-blocking I/O operations.
java.nio.channels.spi: Service-provider classes for the ``java.nio.channels`` package.
java.nio.file.spi: Service-provider classes for the ``java.nio.file`` package.
java.util.concurrent: Utility classes commonly useful in concurrent programming.

### Uses of ExecutorService in java.nio.channels

Methods in java.nio.channels with parameters of type ExecutorService
`static AsynchronousFileChannel` AsynchronousFileChannel.`open(Path file, Set<? extends OpenOption> options, ExecutorService executor, FileAttribute<?>... attrs)` Opens or creates a file for reading and/or writing, returning an asynchronous file channel to access the file.
`static AsynchronousChannelGroup` AsynchronousChannelGroup.`withCachedThreadPool(ExecutorService executor, int initialSize)` Creates an asynchronous channel group with a given thread pool that creates new threads as needed.
`static AsynchronousChannelGroup` AsynchronousChannelGroup.`withThreadPool(ExecutorService executor)` Creates an asynchronous channel group with a given thread pool.

### Uses of ExecutorService in java.nio.channels.spi

Methods in java.nio.channels.spi with parameters of type ExecutorService
`abstract AsynchronousChannelGroup` AsynchronousChannelProvider.`openAsynchronousChannelGroup(ExecutorService executor, int initialSize)` Constructs a new asynchronous channel group with the given thread pool.

### Uses of ExecutorService in java.nio.file.spi

Methods in java.nio.file.spi with parameters of type ExecutorService
`AsynchronousFileChannel` FileSystemProvider.`newAsynchronousFileChannel(Path path, Set<? extends OpenOption> options, ExecutorService executor, FileAttribute<?>... attrs)` Opens or creates a file for reading and/or writing, returning an asynchronous file channel to access the file.

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

Subinterfaces of ExecutorService in java.util.concurrent
`interface` `ScheduledExecutorService` An `ExecutorService` that can schedule commands to run after a given delay, or to execute periodically.

Classes in java.util.concurrent that implement ExecutorService
`class` `AbstractExecutorService` Provides default implementations of `ExecutorService` execution methods.
`class` `ForkJoinPool` An `ExecutorService` for running `ForkJoinTask`s.
`class` `ScheduledThreadPoolExecutor` A `ThreadPoolExecutor` that can additionally schedule commands to run after a given delay, or to execute periodically.
`class` `ThreadPoolExecutor` An `ExecutorService` that executes each submitted task using one of possibly several pooled threads, normally configured using `Executors` factory methods.

Methods in java.util.concurrent that return ExecutorService
`static ExecutorService` Executors.`newCachedThreadPool()` Creates a thread pool that creates new threads as needed, but will reuse previously constructed threads when they are available.
`static ExecutorService` Executors.`newCachedThreadPool(ThreadFactory threadFactory)` Creates a thread pool that creates new threads as needed, but will reuse previously constructed threads when they are available, and uses the provided ThreadFactory to create new threads when needed.
`static ExecutorService` Executors.`newFixedThreadPool(int nThreads)` Creates a thread pool that reuses a fixed number of threads operating off a shared unbounded queue.
`static ExecutorService` Executors.`newFixedThreadPool(int nThreads, ThreadFactory threadFactory)` Creates a thread pool that reuses a fixed number of threads operating off a shared unbounded queue, using the provided ThreadFactory to create new threads when needed.
`static ExecutorService` Executors.`newSingleThreadExecutor()` Creates an Executor that uses a single worker thread operating off an unbounded queue.
`static ExecutorService` Executors.`newSingleThreadExecutor(ThreadFactory threadFactory)` Creates an Executor that uses a single worker thread operating off an unbounded queue, and uses the provided ThreadFactory to create a new thread when needed.
`static ExecutorService` Executors.`newWorkStealingPool()` Creates a work-stealing thread pool using all `available processors` as its target parallelism level.
`static ExecutorService` Executors.`newWorkStealingPool(int parallelism)` Creates a thread pool that maintains enough threads to support the given parallelism level, and may use multiple queues to reduce contention.
`static ExecutorService` Executors.`unconfigurableExecutorService(ExecutorService executor)` Returns an object that delegates all defined `ExecutorService` methods to the given executor, but not any other methods that might otherwise be accessible using casts.

Methods in java.util.concurrent with parameters of type ExecutorService
`static ExecutorService` Executors.`unconfigurableExecutorService(ExecutorService executor)` Returns an object that delegates all defined `ExecutorService` methods to the given executor, but not any other methods that might otherwise be accessible using casts.