When a java program suddenly exits, can you perform some operations?

If the program exits suddenly or there are any exceptions, I need to log For example, when someone presses Ctrl C while running a program, I need to record its sudden exit How can I do this?

Solution

You can try using Shutdown hook From the document, the hook will be executed in the following cases:

>Program normal exit > VM termination

This covers your ^ C situation, but it will undoubtedly cover the situation when the machine is unplugged (unless there is some redundant hardware on the machine)

Here are some design considerations

Example of crude oil:

Runtime.getRuntime().addShutdownHook(new Thread() {
    @Override
    public void run() {
        System.out.println("System was shutdown");
    }
});