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From: Jeff Higgins <jeff@invalid.invalid>
Newsgroups: comp.lang.java.programmer
Subject: Re: javax.swing.Timer blocking program termination
Date: Tue, 14 Jul 2015 10:22:19 -0400
Organization: A noiseless patient Spider
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On 07/14/2015 10:15 AM, Jeff Higgins wrote:

> Now, I still don't know why the short timer1 (below) keeps
> the EDT active unless I explicitly stop it in windowClosing?
>
> import java.awt.EventQueue;
> import java.awt.event.WindowAdapter;
> import java.awt.event.WindowEvent;
> import javax.swing.JFrame;
> import javax.swing.Timer;
>
> public class test extends JFrame {
>    public test() {
>      Timer timer1 = new Timer(1000, event -> {});
>      Timer timer2 = new Timer(1100, event -> {});
>
>      Timer.setLogTimers(true);
>
>      addWindowListener(new WindowAdapter() {
>        @Override
>        public void windowClosing(WindowEvent windowEvent) {
>          System.out.println("Close");
>        }});
>
>      setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
>      setSize(400, 300);
>      setVisible(true);
>      timer1.start();
>      timer2.start();
>    }
>
>    public static void main(String... args) {
>      EventQueue.invokeLater(() -> new test());
>    }
> }
>

If I don't start timer1 (above) main terminates
after one timer log entry after Close is printed.
Even without explicitly stopping timer2.

Shrug?