Shutdown hooks provide a way for Java applications to execute specific threads during JVM shutdown, allowing cleanup activities like releasing resources and saving states.
When the JVM starts shutting down, registered shutdown hooks run concurrently in no defined order, and it’s essential they complete promptly to not delay termination.
Using Runtime.getRuntime().addShutdownHook(Thread hook), developers can register a shutdown hook, enabling them to manage resources like files and network connections effectively.
While useful, shutdown hooks should be implemented carefully due to potential performance impacts on application shutdown and their unsuitability for long-running tasks.
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