Change JProgressBar value, while Thread is running

Question

I want to change the value of a JSlider in a panel, while I'm running a Thread which give's me this value (because of some progress)

So i calculate the progress-value in the Thread, and with a GET-method I fetch the value in the panel and want to set it to the progressbar.

After debugging it, a value is there but the EDIT:[ JProgressBar ] don't change his UI.

Some code:

while(_thread.isAlive()) {
 pb_calc.setValue(_thread.getVal());
 pb_calc.updateUI();
}

Use a `JProgressBar` instead of a `JSlider`. – Andrew Thompson Apr 19 '12 at 15:28 — Andrew Thompson, Apr 19 '12 at 15:28
sorry, i have a progressbar - look edit – Christian 'fuzi' Orgler Apr 19 '12 at 15:31 — Christian 'fuzi' Orgler, Apr 19 '12 at 15:31

mKorbel · Accepted Answer · 2012-04-19T16:38:31.623

4

dont use updateUI, this method is reserved for Look and Feel and UIManager
output from Background Tasks should be wrapped into invokeLater, more in the tutorial Concurency in Swing
better would be invoke Background taks from SwingWorker or inside Runnable#Thread

edited Apr 19 '12 at 16:38

answered Apr 19 '12 at 15:20

mKorbel

can you give me an example what y mean? – Christian 'fuzi' Orgler Apr 19 '12 at 15:28
1

@Christian 'fuzi' Orgler check my profile here, there are examples to my last point – mKorbel Apr 19 '12 at 16:27
2

@Christian'fuzi'Orgler http://stackoverflow.com/questions/8916721/java-swing-update-label/8917565#8917565 is an example. The Swing tutorials also contain one (follow the link in the JProgressBar class javadoc ... how convenient is that) – Robin Apr 19 '12 at 17:21

1 Answers1