Set dynamic JLabel text in a JDialog by timer

Question

Im trying to make a JDialog that will show the user a dynamic message on a JLabel. The message should be a count from 1 to 10 (and it should be changing a number every secon

Answer 1

Have a look at this code example, that's the proper way to use dynamic text with the help of javax.swing.Timer Tutorials, instead of using Thread.sleep(...) thingy,

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class DialogExample extends JDialog
{
    private Timer timer;
    private JLabel changingLabel;
    private int count = 0;
    private String initialText = "TEXT";

    private ActionListener timerAction = new ActionListener()
    {
        public void actionPerformed(ActionEvent ae)
        {
            count++;
            if (count == 10)
                timer.stop();
            changingLabel.setText(initialText + count); 
        }
    };

    private void createDialog()
    {
        setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE);
        setLocationByPlatform(true);

        JPanel contentPane = new JPanel();
        changingLabel = new JLabel(initialText);
        contentPane.add(changingLabel);

        add(contentPane);

        pack();
        setVisible(true);
        timer = new Timer(1000, timerAction);
        timer.start();
    }

    public static void main(String... args)
    {
        SwingUtilities.invokeLater(new Runnable()
        {
            public void run()
            {
                new DialogExample().createDialog();
            }
        });
    }
}