Groups > comp.lang.java.programmer > #29890

Re: refusal to quit

Path	csiph.com!v102.xanadu-bbs.net!xanadu-bbs.net!feeder.erje.net!eu.feeder.erje.net!news.albasani.net!.POSTED!not-for-mail
From	Jan Burse <janburse@fastmail.fm>
Newsgroups	comp.lang.java.programmer
Subject	Re: refusal to quit
Date	Tue, 02 Sep 2014 12:17:14 +0200
Organization	albasani.net
Lines	38
Message-ID	<lu45fa$t92$1@news.albasani.net> (permalink)
References	<u1c10ap9r3l11teuhngbr5on958vu8h2vj@4ax.com>
Mime-Version	1.0
Content-Type	text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding	7bit
X-Trace	news.albasani.net R1cvZGF3+pgLuZ5PANNLGSWPg296udDoU4anZPkTpp8xwcP+qnuQ4WA9Pw9a5Usq+qQhYeBpe9aR5QGz/x7UQA==
NNTP-Posting-Date	Tue, 2 Sep 2014 10:17:14 +0000 (UTC)
Injection-Info	news.albasani.net; logging-data="qFYV9y9gW/wgJXFy7FlbAaY6BjsYFmKGvJKL8pp5+hUtCpWJxKzNXm1sEHuibHDbePZmnay8Cn6FqXHKXQT/DVFmoSxMEZRfN7rvAW/fFTuu59PJ9KlkC1hQUv0jpHQU"; mail-complaints-to="abuse@albasani.net"
User-Agent	Mozilla/5.0 (Macintosh; Intel Mac OS X 10.9; rv:29.0) Gecko/20100101 Firefox/29.0 SeaMonkey/2.26.1
In-Reply-To	<u1c10ap9r3l11teuhngbr5on958vu8h2vj@4ax.com>
Cancel-Lock	sha1:zonr4iVHupt9Qp9bm8tDycwWrcw=
Xref	csiph.com comp.lang.java.programmer:29890

Show key headers only | View raw

Roedy Green schrieb:
> Sometimes programs simply refuse to quit after main has terminated.
>
> Sometimes the app is single-thread so I am baffled what it is waiting
> for.
>
> Practically I can make things work by adding a System.exit(0)
> as the last thing in main.
>
> However, I would like to understand what is going on.  Is there a way
> to shed some light on why a program won't quit?
>

I had the same problem once. It turned out that there
was a pop up menu still around, which made the runtime
think that swing is still running.

And the problem was not persistent to all platforms among
Linux, Windows and Mac. If I remember well it happened
only on windows.

Don't remember the JRE version though. The problem was
very subtle and I solved it by moving the field holding
the pop up from a static variable to a class instance
variable, of a frame.

Now each of my frame has its own local pop up, and the
problem seems to be gone. But a little bit more ram
is needed when multiple frames are open, and when they
use the same pop up.

Bye

BTW: I also noticed that pop ups don't receive tree
traversal events. So I needed to call SwingUtilities
updateComponentTreeUI extra on the pop ups.

Back to comp.lang.java.programmer | Previous | Next — Previous in thread | Find similar | Unroll thread

Thread

refusal to quit Roedy Green <see_website@mindprod.com.invalid> - 2014-08-29 09:56 -0700
  Re: refusal to quit Mike Amling <mamling@chaff.us> - 2014-08-29 12:50 -0500
    Re: refusal to quit Roedy Green <see_website@mindprod.com.invalid> - 2014-08-31 11:31 -0700
      Re: refusal to quit Josip Almasi <joe@vrspace.org> - 2014-09-01 17:14 +0200
        Re: refusal to quit Roedy Green <see_website@mindprod.com.invalid> - 2014-09-01 16:37 -0700
  Re: refusal to quit Josip Almasi <joe@vrspace.org> - 2014-08-29 22:16 +0200
    Re: refusal to quit Roedy Green <see_website@mindprod.com.invalid> - 2014-08-31 11:32 -0700
      Re: refusal to quit Josip Almasi <joe@vrspace.org> - 2014-09-01 17:20 +0200
  Re: refusal to quit Knute Johnson <eternal@knutejohnson.com> - 2014-08-29 17:25 -0700
  Re: refusal to quit Roedy Green <see_website@mindprod.com.invalid> - 2014-09-01 14:20 -0700
    Re: refusal to quit Roedy Green <see_website@mindprod.com.invalid> - 2014-09-01 14:34 -0700
    Re: refusal to quit Josip Almasi <joe@vrspace.org> - 2014-09-02 10:49 +0200
    Re: refusal to quit Arne Vajhøj <arne@vajhoej.dk> - 2014-09-07 22:04 -0400
  Re: refusal to quit Jan Burse <janburse@fastmail.fm> - 2014-09-02 12:17 +0200

csiph-web