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javaapplication-shutdownshutdown-hook

Prevent shutdown after shutdown hook

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? :)

Solution

  • 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.