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Posted on 2004-10-24
Last Modified: 2010-03-31
I am creating a java applet where it needs to show current data at x intervals. So I'm looking for a way to update the displayed data every 5 or 10 seconds. The data is displayed with both text and images. I have tried several things but seem to keep running into dead ends. I'm trying to find the best way to accomplish this. Any information or references would be appreciated.
Question by:Shroder
    LVL 92

    Expert Comment

    Make you applet runnable and use a run() method something like the following:

    public void run()
       while (running)
          // do what u need to do
       catch (Exception ex)
    LVL 92

    Expert Comment

    Another option would be to use the Timer class.
    LVL 3

    Expert Comment

    I would go with what objects said since it does most of the threading work for you.
    LVL 86

    Accepted Solution

    If you're using Swing components in your applet, you should use a Swing Timer. Here's a clock example you can run:

    <applet codebase="." code="ClockApplet.class" width="300" height="100">

    import javax.swing.*;
    import java.awt.FlowLayout;
    import java.awt.event.*;
    import java.text.SimpleDateFormat;
    import java.util.Date;

    public class ClockApplet extends JApplet implements ActionListener {
          Timer timer;
          Date currentTime;
          SimpleDateFormat timeFormat;
          JLabel labTime;

          public void init() {
                labTime = new JLabel();
                setLayout(new FlowLayout());
                currentTime = new Date();
                timeFormat = new SimpleDateFormat("HH:mm:ss");
                labTime.setText(timeFormat.format(new Date()));
                add(labTime, SwingConstants.CENTER);
                timer = new Timer(1000, this);

          public void actionPerformed(ActionEvent e) {
                labTime.setText(timeFormat.format(new Date()));
    LVL 86

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