Delaying a loop

[Eustace]

I have a program that contains a do-while loop, inside of which it
(re)calculates a array of labels XY[x][y], each one consisting of a
single digit, and print them forming an x by y rectangle. What I want to
do is slow the loop down so I can see the different formations of the
digits; so I tried

try {
Thread.sleep(10 00);
} catch(Interrupt edException ex) {}

at the end of the loop, expecting to see the number formations changing
every second, like seeing a film frame by frame. Instead, however, there
was a loooooong delay, and then the loop reached almost instantaneously
its conclusion.

How can I stop the execution of the loop until I have time to see the
results in each pass?

Eustace

--
It ain't THAT, babe! - A radical reinterpretatio n

http://www.geocities.com/itaintme_babe/itaintme.html

[Jon Bettinger]

Re: Delaying a loop

Eustace wrote:

I have a program that contains a do-while loop, inside of which it
(re)calculates a array of labels XY[x][y], each one consisting of a
single digit, and print them forming an x by y rectangle. What I want to
do is slow the loop down so I can see the different formations of the
digits; so I tried
>
try {
Thread.sleep(10 00);
} catch(Interrupt edException ex) {}
>
at the end of the loop, expecting to see the number formations changing
every second, like seeing a film frame by frame. Instead, however, there
was a loooooong delay, and then the loop reached almost instantaneously
its conclusion.
>
How can I stop the execution of the loop until I have time to see the
results in each pass?
>
Eustace
>

Try flushing the io before the call to sleep. Your output is probably
being buffered.
i.e., if using System.out,
System.out.flus h();

[Eustace]

Re: Delaying a loop

On 2008-08-02 15:39 Jon Bettinger wrote:

Eustace wrote:

>I have a program that contains a do-while loop, inside of which it
>(re)calculat es a array of labels XY[x][y], each one consisting of a
>single digit, and print them forming an x by y rectangle. What I want
>to do is slow the loop down so I can see the different formations of
>the digits; so I tried
>>
>try {
> Thread.sleep(10 00);
>} catch(Interrupt edException ex) {}
>>
>at the end of the loop, expecting to see the number formations
>changing every second, like seeing a film frame by frame. Instead,
>however, there was a loooooong delay, and then the loop reached almost
>instantaneousl y its conclusion.
>>
>How can I stop the execution of the loop until I have time to see the
>results in each pass?
>>
>Eustace
>>

>
Try flushing the io before the call to sleep. Your output is probably
being buffered.
i.e., if using System.out,
System.out.flus h();

Thanks. That makes sense. But I am not using System.out, the program
extends JFrame and I am using the setText command to change the JLabels
that have been added to the JPanel of the Container. How do I flush in
this case?

Eustace

--
It ain't THAT, babe! - A radical reinterpretatio n

http://www.geocities.com/itaintme_babe/itaintme.html

[Jon Bettinger]

Re: Delaying a loop

Eustace wrote:

On 2008-08-02 15:39 Jon Bettinger wrote:

>Eustace wrote:

>>I have a program that contains a do-while loop, inside of which it
>>(re)calculate s a array of labels XY[x][y], each one consisting of a
>>single digit, and print them forming an x by y rectangle. What I want
>>to do is slow the loop down so I can see the different formations of
>>the digits; so I tried
>>>
>>try {
>> Thread.sleep(10 00);
>>} catch(Interrupt edException ex) {}
>>>
>>at the end of the loop, expecting to see the number formations
>>changing every second, like seeing a film frame by frame. Instead,
>>however, there was a loooooong delay, and then the loop reached
>>almost instantaneously its conclusion.
>>>
>>How can I stop the execution of the loop until I have time to see the
>>results in each pass?
>>>
>>Eustace
>>>

>>
>Try flushing the io before the call to sleep. Your output is probably
>being buffered.
>i.e., if using System.out,
>System.out.flu sh();

>
Thanks. That makes sense. But I am not using System.out, the program
extends JFrame and I am using the setText command to change the JLabels
that have been added to the JPanel of the Container. How do I flush in
this case?
>
Eustace
>

Hmmm, I'm not a swing expert, but you could try calling invalidate on
the component that changed.

[Eustace]

Re: Delaying a loop

On 2008-08-03 20:39 Jon Bettinger wrote:

Eustace wrote:

>On 2008-08-02 15:39 Jon Bettinger wrote:

>>Eustace wrote:
>>>I have a program that contains a do-while loop, inside of which it
>>>(re)calculat es a array of labels XY[x][y], each one consisting of a
>>>single digit, and print them forming an x by y rectangle. What I
>>>want to do is slow the loop down so I can see the different
>>>formations of the digits; so I tried
>>>>
>>>try {
>>> Thread.sleep(10 00);
>>>} catch(Interrupt edException ex) {}
>>>>
>>>at the end of the loop, expecting to see the number formations
>>>changing every second, like seeing a film frame by frame. Instead,
>>>however, there was a loooooong delay, and then the loop reached
>>>almost instantaneously its conclusion.
>>>>
>>>How can I stop the execution of the loop until I have time to see
>>>the results in each pass?
>>>>
>>>Eustace
>>>>
>>>
>>Try flushing the io before the call to sleep. Your output is
>>probably being buffered.
>>i.e., if using System.out,
>>System.out.fl ush();

>>
>Thanks. That makes sense. But I am not using System.out, the program
>extends JFrame and I am using the setText command to change the
>JLabels that have been added to the JPanel of the Container. How do I
>flush in this case?
>>
>Eustace
>>

Hmmm, I'm not a swing expert, but you could try calling invalidate on
the component that changed.

Thanks anyway. I prefer the newsgroups, but now I'll try the Sun forums.

--
Date Calculator with all-purpose JS code

http://www.geocities.com/emfril/js/datecalc.html

[Dr J R Stockton]

Re: Delaying a loop

In comp.lang.java message <g776g2$kk8$1@a ioe.org>, Mon, 4 Aug 2008
11:17:45, Eustace <emf@email.comp osted:

Sig:

>Date Calculator with all-purpose JS code
>http://www.geocities.com/emfril/js/datecalc.html

Does it handle Ordinal Date, ISO Week Number, Julian/Gregorian, and
Easter Sunday? How about the Hebrew, Islamic, etc., calendars? Without
all of those, and more, it cannot be accurately described as all-
purpose.

--
(c) John Stockton, nr London UK. ?@merlyn.demon. co.uk IE7 FF2 Op9 Sf3
news:comp.lang. javascript FAQ <URL:http://www.jibbering.c om/faq/index.html>.
<URL:http://www.merlyn.demo n.co.uk/js-index.htmjscr maths, dates, sources.
<URL:http://www.merlyn.demo n.co.uk/TP/BP/Delphi/jscr/&c, FAQ items, links.

[Eustace]

Re: Delaying a loop

On 2008-08-04 14:35 Dr J R Stockton wrote:

In comp.lang.java message <g776g2$kk8$1@a ioe.org>, Mon, 4 Aug 2008
11:17:45, Eustace <emf@email.comp osted:
>
Sig:

>Date Calculator with all-purpose JS code
>http://www.geocities.com/emfril/js/datecalc.html

>
Does it handle Ordinal Date, ISO Week Number, Julian/Gregorian, and
Easter Sunday? How about the Hebrew, Islamic, etc., calendars? Without
all of those, and more, it cannot be accurately described as all-
purpose.

Dear Dr. Stockton.

We have crossed paths again. I most certainly do not intend to compete
with your unrivaled JavaScript subroutines. But mine have been useful
for some who still program in outdated languages (the owner of a QBasic
website was most thankful for sending him my subroutines, another
programmer once thanked me for helping him get a job - before 2000), and
I still prefer them as simpler when location, daylight savings time,
other calendars, and other considerations would unnecessarily complicate
the calculations.

One might argue, though, that the description "all-purpose JS code" is
not the best I could choose. I just intended it to mean that it is for
general, common, purposes and not for special ones - an all-purpose
product is not expected to be the best in any particular case, but than
your methods are an exception to that rule, being both "all-purpose" and
thorough. "Generic" might have been a better choice in my case, meaning
that it can be used in all computing languages, including those that do
not include a Date function. Anyway, I include occasionally the
signature with the description hoping to attract the curiosity of
someone who might find them useful for his/her purposes.

I certainly sense a feeling of jealousy, or maybe rather a kind of
competitiveness on your part, and I would like to express my sincere
gratitude for the deep sense of satisfaction that it has provided me. I
may insist that the variable name "epoch" would better apply to a 400
year period, and that the counting would more rationally start with year
1CE rather than 1970CE, but now such questions are of course of purely
academic interest; the alternate options have been established, and we
know very well that when such things get established it is very
difficult to change them. And anyway, personally I would be much more
interested to see the US adopt the metric system in my lifetime than to
have my opinions on the date functions prevail.

Cheers,

Eustace

--
It ain't THAT, babe! - A radical reinterpretatio n

http://www.geocities.com/itaintme_babe/itaintme.html

[Robert Larsen]

Re: Delaying a loop

Eustace wrote:

On 2008-08-02 15:39 Jon Bettinger wrote:
Thanks. That makes sense. But I am not using System.out, the program
extends JFrame and I am using the setText command to change the JLabels
that have been added to the JPanel of the Container. How do I flush in
this case?
>
Eustace
>

What you probably want to do is something like this (pseudo code):

public class StuffDoer implements Runnable {
private void recalculate() {
//...
}

private void repaint() {
//...
}

public void run() {
Thread.sleep(30 );
recalculate();
repaint();
SwingUtilities. invokeLater(thi s);
}
}