Client and backend. This class is shared: the same code is compiled into your app and into your server, so everything on this page works in both.

public interface ExecutorService

ExtendsExecutor

Known subtypesAbstractExecutorService, ScheduledExecutorService

An Executor that answers a Future for a submitted task and can be shut down. Executors creates the implementations; AbstractExecutorService provides everything but the execution itself.

Methods

public abstract void shutdown()Stops accepting tasks.
public abstract List<Runnable> shutdownNow()Stops accepting tasks, drops the ones that have not started and answers them, and interrupts the ones that are running.
public abstract boolean isShutdown()
public abstract boolean isTerminated()Whether the service was shut down and every task it accepted has finished or been dropped.
public abstract boolean awaitTermination(long timeout, TimeUnit unit) throws InterruptedExceptionWaits until the service has terminated or the time is up, and answers which of the two it was.
public abstract <T> Future<T> submit(Callable<T> task)
public abstract <T> Future<T> submit(Runnable task, T result)
public abstract Future<?> submit(Runnable task)
public abstract <T> List<Future<T>> invokeAll(Collection<? extends Callable<T>> tasks) throws InterruptedExceptionRuns every task and answers their futures, all of them done.
public abstract <T> List<Future<T>> invokeAll(Collection<? extends Callable<T>> tasks, long timeout, TimeUnit unit) throws InterruptedExceptionRuns every task and answers their futures once all are done or the time is up; the ones not done by then are cancelled.
public abstract <T> T invokeAny(Collection<? extends Callable<T>> tasks) throws InterruptedException, ExecutionExceptionThe result of one of the tasks that completed without failing; the others are cancelled.
public abstract <T> T invokeAny(Collection<? extends Callable<T>> tasks, long timeout, TimeUnit unit) throws InterruptedException, ExecutionException, TimeoutExceptionAs invokeAny(Collection), giving up with a TimeoutException when no task has succeeded in time.

Inherited methods

From Executor

execute

Method details

shutdown

public abstract void shutdown()
Stops accepting tasks. The ones already submitted still run.

shutdownNow

public abstract List<Runnable> shutdownNow()
Stops accepting tasks, drops the ones that have not started and answers them, and interrupts the ones that are running.

isShutdown

public abstract boolean isShutdown()

isTerminated

public abstract boolean isTerminated()
Whether the service was shut down and every task it accepted has finished or been dropped.

awaitTermination

public abstract boolean awaitTermination(long timeout, TimeUnit unit) throws InterruptedException
Waits until the service has terminated or the time is up, and answers which of the two it was.

Throws

InterruptedException

submit

public abstract <T> Future<T> submit(Callable<T> task)

submit

public abstract <T> Future<T> submit(Runnable task, T result)

submit

public abstract Future<?> submit(Runnable task)

invokeAll

public abstract <T> List<Future<T>> invokeAll(Collection<? extends Callable<T>> tasks) throws InterruptedException
Runs every task and answers their futures, all of them done.

Throws

InterruptedException

invokeAll

public abstract <T> List<Future<T>> invokeAll(Collection<? extends Callable<T>> tasks, long timeout, TimeUnit unit) throws InterruptedException
Runs every task and answers their futures once all are done or the time is up; the ones not done by then are cancelled.

Throws

InterruptedException

invokeAny

public abstract <T> T invokeAny(Collection<? extends Callable<T>> tasks) throws InterruptedException, ExecutionException
The result of one of the tasks that completed without failing; the others are cancelled.

Throws

InterruptedException
ExecutionException

invokeAny

public abstract <T> T invokeAny(Collection<? extends Callable<T>> tasks, long timeout, TimeUnit unit) throws InterruptedException, ExecutionException, TimeoutException
As invokeAny(Collection), giving up with a TimeoutException when no task has succeeded in time.

Throws

InterruptedException
ExecutionException
TimeoutException