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Is there a way in Java to handle a received SIGTERM?
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The SIGTERM signal is a generic signal used to cause program termination. Unlike SIGKILL , this signal can be blocked, handled, and ignored.
The question was how to gracefully quit on SIGTERM. Your example shows how to ignore SIGINT. You can change to ignore SIGTERM, but it is a bad idea for a daemon to ignore it, because it will then instead be SIGKILL:ed after a timeout, and that can't be ignored or gracefully handled at all.
If a process receives SIGTERM, some other process sent that signal. SIGTERM is the signal that is typically used to administratively terminate a process. That's not a signal that the kernel would send, but that's the signal a process would typically send to terminate (gracefully) another process.
The SIGKILL signal can be sent with a kill system call. Note though, the SIGTERM handler registered in the following code sample can't catch the delivered SIGKILL , and it immediately kills the given child process.
Yes, you can register a shutdown hook with Runtime.addShutdownHook().
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