Question

I am writing an application program using swing. I need to exit from the application by clicking the JButton for that can i use System.exit() or should i use some other methods, which is the best practice. If calling System.exit() is not best practice then tell the reason and tell the alternative way to exit from the application.

Answer 1

Personnaly, I do consider as best practice to let application exit by itself : if you write a main class with a main(String[] args), with empty code, running it will exit silently from Java program.

But, in most times, like most of developpers, I rely upon System.exit(/an exit code/), especially for Swing applications, where the Swing EDT will run endlessly, as justkt wrote.. The known drawxback of this method is that most of applciation code is not called, what I avoid by setting a shutdown hook by calling Runtime.addShutdownHook(Thread), which will allow me to clean application (close threads, and so on).