When Shutdown Hooks Break Bad

Question

If I add a shutdown hook to my Java program\'s runtime like so:

public class MyShutdownHook implements Runnable
{
    @Override
    public void run(         


        

Answer 1

Any time the JVM can exit gracefully, the shutdown hook is run. It is not run if:

• The JVM crashes. (Depending on how/when it crashes, the hook may still run, but no guarantees are made)
• The JVM gets SIGKILL or similar, and is immediately stopped by the OS