Running a method when closing the program?

Question

I need to execute a method, (a method which creates a file), when I exit my program, how would I do this?

Answer 1

Add shutdown hook. See this javadoc.

Example:

public static void main(String[] args) {
    Runtime.getRuntime().addShutdownHook(new Thread(new Runnable() {
        public void run() {
            System.out.println("In shutdown hook");
        }
    }, "Shutdown-thread"));
}