Prevent shutdown after shutdown hook

Question

So, I should handle Ctrl-C. Ok, I can do that by registering a shutdown hook. And it works well until I want to prevent the shutdown. When Ctrl-C pressed I want to ask the user if he really wants to close the app, and if he isn't, then I want my app to continue running. The problem is I don't know how to prevent shutdown after Ctrl-C pressed.

Any help? :)

Answer 1

Once you're in a shutdown hook it's too late.

from Runtime.addShutdownHook:

Once the shutdown sequence has begun it can be stopped only by invoking the halt method, which forcibly terminates the virtual machine.

Answer 2

You can't abort a shutdown from inside a shutdown hook. It will proceed.