Spring task execution and scheduling

Using threads in any web application is not easy when we are dealing with a long-running task. Sometimes, we need to run a task asynchronously or after a specific delay, and that can be accomplished by Spring's task execution and scheduling. The Spring Framework introduced abstractions for asynchronous execution and scheduling of tasks with the TaskExecutor and TaskScheduler interfaces.

TaskExecutor

Spring provides the TaskExecutor interface as an abstraction for dealing with Executor. The implementation classes of TaskExecutor are as follows:

• SimpleAsyncTaskExecutor: This starts a new thread and executes it asynchronously. It does not reuse the thread.
• SyncTaskExecutor: This executes each task synchronously in the calling thread. It does not reuse the thread.
• ConcurrentTaskExecutor: This exposes bean properties for configuring java.util.concurrent.Executor.
• SimpleThreadPoolTaskExecutor: This is a subclass of SimpleThreadPool of Quartz, which listens to Spring...