i cannot change two progressBar immediately

Question

I want to change two progressBar immediately. but I can't.

what I'm saying is..

nextButton.addMouseListener(new java.awt.event.MouseAdapter() {     
    public void mouseClicked(java.awt.event.MouseEvent evt) {
        WorkProgressBar.setVisible(true);
        FileProgressBar.setVisible(false);

        AND SO ON(about 2 secs.)

        WorkProgressBar.setVisible(false);
        FileProgressBar.setVisible(true);
    }
}

that code takes about 2 or more seconds.

but what I can see is just blink of ProgressBar.

so I searched a lot of inform.

I used thread, swingworker, swingutilities(invokelater)

but I can't solved.

how can I solve this. please help me.

'AND SO ON(about 2 secs.)' is preventing the handling of the messages to the windows that represent the ProgressBar. They only get processes when the event-handler exits, so the visible property ends up being briefly toggled and the bar just blinks. — Martin James, Nov 05 '13 at 11:06

score 0 · Accepted Answer · answered Nov 05 '13 at 22:40

You probably want to assign the tasks done in those 2 seconds to worker threads. Lets say you wanted to A.) decrement one progress bar and B.) increase another progress bar.

You'd assign one thread to do A.) by implementing its run method to do just this. And then the other thread will do the work on B.)

Now in the meantime, you want your main thread (which is what assigns these 2 threads to start doing their work) to wait until your worker threads are done. So after doing thread1.start() and thread2.start(), you'd wait for them to finish by doing a join, like this:

try {
    thread1.join();
    thread2.join();
} catch (Exception e) { e.printStackTrace() }

i cannot change two progressBar immediately

1 Answers1