JVM Shutdown

Summary

End-of-lifecycle issues for tasks, threads, services, and applications can add complexity to their design and implementation. Java does not provide a preemptive mechanism for cancelling activities or terminating threads. Instead, it provides a cooperative interruption mechanism that can be used to facilitate cancellation, but it is up to you to construct protocols for cancellation and use them consistently. Using FutureTask and the Executor framework simplifies building cancellable tasks and services.