Thread: JProgress Bar In GUI

Hi, I have created a GUI with a frame, panel, buttons etc etc

I now need to add a JProgressBar. All the examples and tutorials I am finding are for creating a JProgressBar and addding it to the panel, I am happy with what my GUI looks like and dont want to mess around with the layout of it, so would prefer if the JProgressBar component just opens for the time it is needed in a new (almost window type of things) and then closes, is there a way I can do this. Or maybe i am getting confused, does a JProgressBar have to be visible (given a location on the panel) or does it just open like a pop up and then close once finished)??

Sorry for such a long question, I am just confused about JProgressBar

Thanks

Thanks that makes sense, i've got the panel way to work, i might try the JDialog way later.
Thanks =).

Hi, i am testing

public class Test {
  public static displayPB(){
    JFrame parentFrame = new JFrame();
    parentFrame.setSize(500, 150);
    JLabel jl = new JLabel();
    jl.setText("Count : 0");
 
    parentFrame.add(BorderLayout.CENTER, jl);
    parentFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
 
    parentFrame.setVisible(true);
 
    final JDialog dlg = new JDialog(parentFrame, "Progress Dialog", true);
    JProgressBar dpb = new JProgressBar(0, 500);
    dlg.add(BorderLayout.CENTER, dpb);
    dlg.add(BorderLayout.NORTH, new JLabel("Progress..."));
    dlg.setDefaultCloseOperation(JDialog.DO_NOTHING_ON_CLOSE);
    dlg.setSize(300, 75);
    dlg.setLocationRelativeTo(parentFrame);
 
    Thread t = new Thread(new Runnable() {
      public void run() {
        dlg.setVisible(true);
      }
    });
    t.start();
    for (int i = 0; i <= 500; i++) {
      jl.setText("Count : " + i);
      dpb.setValue(i);
      if(dpb.getValue() == 500){
        dlg.setVisible(false);
        System.exit(0);
 
      }
      try {
        Thread.sleep(25);
      } catch (InterruptedException e) {
        e.printStackTrace();
      }
    }
    dlg.setVisible(true);
  }
}

when i call the method from another method such as

	    public GUI() {     
	    	displayPB();
	    }
	    }

the frame and dialog and jprogress are displayed but the bar isnt shown and dosnt change.

what am i doing wrong.


Thanks

Hi,

The code to update the progress bar's value should be executed by a separate thread, otherwise the GUI will hang.