Name
Executors
Synopsis
This utility
class defines static factory methods for creating
ExecutorService and
ScheduledExecutorService objects. Each of the
factory methods has a variant that allows you to explicitly specify a
ThreadFactory. newSingleThreadExecutor(
) returns an ExecutorService that uses a
single thread and an unbounded queue of waiting tasks.
newFixedThreadPool( ) returns an
ExecutorService that uses a thread pool with the
specified number of threads and an unbounded queue.
newCachedThreadPool( ) returns an
ExecutorService that does not queue tasks but
instead creates as many threads as are needed. When a task
terminates, its thread is cached for reuse. Cached threads are
allowed to terminate if they remain unused for 60 seconds.
newSingleThreadScheduledExecutor( ) returns a
ScheduledExecutorService that uses a single thread
for running tasks. newScheduledThreadPool( )
returns a ScheduledExecutorService that uses a
thread pool of the specified size.
The factory methods of this class typically return instances of
ThreadPoolExecutor and
ScheduledThreadPoolExecutor. If the returned
objects are cast to these implementing types, they can be configured
(to change the thread pool size, for example). If you want to prevent
this from happening, use the unconfigurableExecutorService(
) and unconfigurableScheduledExecutorService(
) methods to obtain wrapper objects that implement only the
ExecutorService and
ScheduledExecutorService methods and do not permit
configuration.
Other ...
Get Java in a Nutshell, 5th Edition now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
