System. Exit (0) in Java

I am writing an application using swing I need to exit from the application and click JButton to use system Exit (), or I should use another method, which is the best practice If you call system Exit () is not a best practice, so please tell the reason and tell the alternative method to exit the application

Solution

Personally, I think the best way is to let the application exit by itself: if you write a main class with main (string [] args) and use empty code, running it will silently exit from the Java program

But most of the time, like most developers, I rely on system Exit (/ an exit code /), especially for swing applications, where swing EDT will run endlessly, as written by justkt The known drawxback of this method is that most application code has not been called. I call runtime Addshutdown hook (thread) sets a close hook to avoid this situation, which will allow me to clean up the application (close threads, etc.)