Also: SpringCore
package

org.springframework.core.task

This package defines Spring's core TaskExecutor abstraction, and provides SyncTaskExecutor and SimpleAsyncTaskExecutor implementations.

Interfaces

AsyncTaskExecutor Extended interface for asynchronous TaskExecutor implementations, offering an overloaded execute(Runnable, long) variant with a start timeout parameter as well support for java.util.concurrent.Callable. 
TaskExecutor Simple task executor interface that abstracts the execution of a Runnable. 

Classes

SimpleAsyncTaskExecutor TaskExecutor implementation that fires up a new Thread for each task, executing it asynchronously. 
SyncTaskExecutor TaskExecutor implementation that executes each task synchronously in the calling thread. 

Exceptions

TaskRejectedException Exception thrown when a TaskExecutor rejects to accept a given task for execution. 
TaskTimeoutException Exception thrown when a AsyncTaskExecutor rejects to accept a given task for execution because of the specified timeout.