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Groups > comp.lang.java.programmer > #31995
| From | Jeff Higgins <jeff@invalid.invalid> |
|---|---|
| Newsgroups | comp.lang.java.programmer |
| Subject | Re: javax.swing.Timer blocking program termination |
| Date | 2015-07-13 20:27 -0400 |
| Organization | A noiseless patient Spider |
| Message-ID | <mo1l69$l8g$1@dont-email.me> (permalink) |
| References | <mo1g22$7hd$1@dont-email.me> |
On 07/13/2015 07:03 PM, Knute Johnson wrote:
> So I have this program that uses a couple of javax.swing.Timers. I
> forgot to put in code to stop one of the timers yet the program would
> still terminate. I have set the default close operation for the frame
> to be DISPOSE_ON_CLOSE.
>
> What I found was that a timer of less the 1000ms would prevent an
> application based on a JFrame from stopping but 1000ms or more and it
> would stop just fine.
>
> I know that javax.swing.Timer uses a common thread for all timers but I
> don't see anywhere that describes the stopping behavior.
>
> The program below will stop if the JFrame is closed and the timer is
> 1000ms or greater but hang if it is less. I would be really curious to
> know if somebody else can duplicate this.
>
> import java.awt.*;
> import java.awt.event.*;
> import javax.swing.*;
>
> public class test extends JFrame {
> public test() {
> Timer timer = new Timer(1000,event -> {});
> setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
> setSize(400,300);
> setVisible(true);
> timer.start();
> }
>
> public static void main(String... args) {
> EventQueue.invokeLater(() -> new test());
> }
> }
>
import java.awt.EventQueue;
import javax.swing.JFrame;
import javax.swing.Timer;
public class test extends JFrame {
public test() {
Timer timer = new Timer(900, event -> {
System.out.println("-"); });
addWindowListener(new java.awt.event.WindowAdapter() {
@Override
public void windowClosing(java.awt.event.WindowEvent windowEvent) {
System.out.println("Close"); }});
setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
setSize(400, 300);
setVisible(true);
timer.start();
}
public static void main(String... args) {
EventQueue.invokeLater(() -> new test());
}
}
jeff@debian:~$ javac test.java
jeff@debian:~$ java -showversion test
java version "1.8.0_40"
Java(TM) SE Runtime Environment (build 1.8.0_40-b25)
Java HotSpot(TM) 64-Bit Server VM (build 25.40-b25, mixed mode)
-
-
Close
-
-
-
-
^Z
[1]+ Stopped java -showversion test
jeff@debian:~$ jobs
[1]+ Stopped java -showversion test
jeff@debian:~$ fg
java -showversion test
-
-
-
-
^Cjeff@debian:~$
Back to comp.lang.java.programmer | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread
javax.swing.Timer blocking program termination Knute Johnson <nospam@rabbitbrush.frazmtn.com> - 2015-07-13 16:03 -0700
Re: javax.swing.Timer blocking program termination Jeff Higgins <jeff@invalid.invalid> - 2015-07-13 20:27 -0400
Re: javax.swing.Timer blocking program termination Knute Johnson <nospam@rabbitbrush.frazmtn.com> - 2015-07-13 17:46 -0700
Re: javax.swing.Timer blocking program termination Jeff Higgins <jeff@invalid.invalid> - 2015-07-13 21:35 -0400
Re: javax.swing.Timer blocking program termination Jeff Higgins <jeff@invalid.invalid> - 2015-07-13 22:13 -0400
Re: javax.swing.Timer blocking program termination Jeff Higgins <jeff@invalid.invalid> - 2015-07-13 22:27 -0400
Re: javax.swing.Timer blocking program termination e.d.programmer@gmail.com - 2015-07-14 06:31 -0700
Re: javax.swing.Timer blocking program termination Jeff Higgins <jeff@invalid.invalid> - 2015-07-14 10:15 -0400
Re: javax.swing.Timer blocking program termination Jeff Higgins <jeff@invalid.invalid> - 2015-07-14 10:22 -0400
Re: javax.swing.Timer blocking program termination e.d.programmer@gmail.com - 2015-07-14 07:39 -0700
Re: javax.swing.Timer blocking program termination Eric Sosman <esosman@comcast-dot-net.invalid> - 2015-07-14 10:53 -0400
Re: javax.swing.Timer blocking program termination e.d.programmer@gmail.com - 2015-07-14 10:16 -0700
Re: javax.swing.Timer blocking program termination Eric Sosman <esosman@comcast-dot-net.invalid> - 2015-07-14 13:25 -0400
Re: javax.swing.Timer blocking program termination e.d.programmer@gmail.com - 2015-07-14 10:45 -0700
Re: javax.swing.Timer blocking program termination Eric Sosman <esosman@comcast-dot-net.invalid> - 2015-07-14 14:16 -0400
Re: javax.swing.Timer blocking program termination Gene Wirchenko <genew@telus.net> - 2015-07-14 12:56 -0700
Re: javax.swing.Timer blocking program termination Eric Sosman <esosman@comcast-dot-net.invalid> - 2015-07-14 16:14 -0400
Re: javax.swing.Timer blocking program termination e.d.programmer@gmail.com - 2015-07-15 05:11 -0700
Re: javax.swing.Timer blocking program termination Jeff Higgins <jeff@invalid.invalid> - 2015-07-15 08:33 -0400
Re: javax.swing.Timer blocking program termination Martin Gregorie <martin@address-in-sig.invalid> - 2015-07-15 18:46 +0000
Re: javax.swing.Timer blocking program termination Jeff Higgins <jeff@invalid.invalid> - 2015-07-15 21:18 -0400
Re: javax.swing.Timer blocking program termination Jeff Higgins <jeff@invalid.invalid> - 2015-07-15 22:13 -0400
Re: javax.swing.Timer blocking program termination Jeff Higgins <jeff@invalid.invalid> - 2015-07-14 10:55 -0400
Re: javax.swing.Timer blocking program termination Knute Johnson <nospam@rabbitbrush.frazmtn.com> - 2015-07-14 08:17 -0700
Re: javax.swing.Timer blocking program termination Jeff Higgins <jeff@invalid.invalid> - 2015-07-14 11:42 -0400
Re: javax.swing.Timer blocking program termination Martin Gregorie <martin@address-in-sig.invalid> - 2015-07-14 18:35 +0000
Re: javax.swing.Timer blocking program termination Jeff Higgins <jeff@invalid.invalid> - 2015-07-14 15:17 -0400
Re: javax.swing.Timer blocking program termination Jeff Higgins <jeff@invalid.invalid> - 2015-07-14 15:36 -0400
Re: javax.swing.Timer blocking program termination Eric Sosman <esosman@comcast-dot-net.invalid> - 2015-07-14 15:51 -0400
Re: javax.swing.Timer blocking program termination Martin Gregorie <martin@address-in-sig.invalid> - 2015-07-14 21:51 +0000
Re: javax.swing.Timer blocking program termination Knute Johnson <nospam@rabbitbrush.frazmtn.com> - 2015-07-14 15:08 -0700
Re: javax.swing.Timer blocking program termination Martin Gregorie <martin@address-in-sig.invalid> - 2015-07-15 01:16 +0000
Re: javax.swing.Timer blocking program termination Jeff Higgins <jeff@invalid.invalid> - 2015-07-14 16:09 -0400
Re: javax.swing.Timer blocking program termination Jeff Higgins <jeff@invalid.invalid> - 2015-07-14 18:32 -0400
Re: javax.swing.Timer blocking program termination Jeff Higgins <jeff@invalid.invalid> - 2015-07-14 18:34 -0400
Re: javax.swing.Timer blocking program termination Jeff Higgins <jeff@invalid.invalid> - 2015-07-14 20:31 -0400
Re: javax.swing.Timer blocking program termination Knute Johnson <nospam@rabbitbrush.frazmtn.com> - 2015-07-14 08:16 -0700
Re: javax.swing.Timer blocking program termination Joerg Meier <joergmmeier@arcor.de> - 2015-07-14 08:32 +0200
Re: javax.swing.Timer blocking program termination Jeff Higgins <jeff@invalid.invalid> - 2015-07-14 22:18 -0400
Re: javax.swing.Timer blocking program termination Jeff Higgins <jeff@invalid.invalid> - 2015-07-15 08:26 -0400
Re: javax.swing.Timer blocking program termination Knute Johnson <nospam@rabbitbrush.frazmtn.com> - 2015-07-15 11:05 -0700
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