Can timer Update swing Widgets , or some tips needed.

[raminaa niilian]

Hi
Thank you for reading my post.
Here is the problem :
I have a timer , and i want it to update my jlabel in a count Down manner ,
so the folowing code showd do this job ?
I write them in a button event , but it just run one time and never my jlable text reaches more than 1 .

Timer tm = new Timer();
tm.schedule(new TimerTask() {
    public void run() {
    i++;
    jLabel1.setText(i);
 
    }
},5000);

Any help is appropriated.

[Kaj Bjurman]

Hi,

You are scheduling the task for one execution only. There is another method which takes an argument which is the period (if you want repeated executions):
schedule(TimerTask task, long delay, long period)

Kaj

[Stan James]

Now you've gotten the wait and incrementing i off the AWT thread into the timer thread which is a good thing. It's probably not a good thing for the timer thread to update the label text, though. I've done this and had all kinds of weird user experience problems ... fields would only update if you resized the window and such.

The trick is to put the update into yet another runnable on the AWT thread. Look up the doc on SwingUtilities.invokeLater() and holler if you need help.