how to capture when java application is quit? [duplicate]

Question

This question already has answers here:

OnExit Event For a Swing Application? (3 answers)

Closed 8 years ago.

How can i get log4j to log to a file on application exit. currently i am using the below when application is starting, but not sure how to capture on application exit

logger.info("Starting application....");

Answer 1

You'll have to register a shutdown hook

Runtime.getRuntime().addShutdownHook(new Thread(new Runnable() {            
    @Override
    public void run() {
        // do your thing
    }
}));

Note that this will only get executed if the program ends naturally.

Answer 2

Use a shutdown hook:

Runtime.getRuntime().addShutdownHook(new Thread() {
    public void run() {
        // log here
    });