Question

I would like to save the programs settings every time the user exits the program. So I need a way to call a function when the user quits the program. How do I do that?

I am using Java 1.5.

Answer 1

You can add a shutdown hook to your application by doing the following:

Runtime.getRuntime().addShutdownHook(new Thread(new Runnable() {     public void run() {         // what you want to do     } })); 

This is basically equivalent to having a try {} finally {} block around your entire program, and basically encompasses what’s in the finally block.

Please note the caveats though!