Re: Question about updati

"Knute Johnson" <knute.johnson@THRWHITE.remove-dii-this>
Wed, 27 Apr 2011 15:29:12 GMT
  To: wrote:

Hey all,

I've been so "lucky" that I've inherited a big applet that I would like
to improve.

It has a set of buttons that perform some very lengthy processes and I
would like to add a progressbar to it, so the user can see that
something is actually happening..;)

But I cant quite get it to work. The following code shows how the code
is right now, can anyone tell me how I get the loop inside the
MouseAdapter to actually update the progressbar ? (The code needs to be
1.3 compliant)

The solution is probably very straightforward, but this is my first
adventure into the world of Swing...:)

public class SwingTest extends JFrame {

    static JProgressBar bar;

    public static void main(String[] args) {
        SwingTest t = new SwingTest();
        t.setLayout(new FlowLayout());
        bar = new JProgressBar();
        JButton button = new JButton("CLICK");
        button.addMouseListener(new MouseAdapter() {
            public void mouseClicked(MouseEvent ev) {
                for (int i=0; i<101;i++) {
                    try {
                    } catch (InterruptedException e) {
        while (true) {
            try {
            } catch (InterruptedException e) {

You are blocking the event dispatch thread by not returning immediately
from the mouse listener. Start a thread running in the mouse listener
and have that update your progress bar.


Knute Johnson
email s/nospam/knute/

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