In Java Swing, you can use the javax.swing.Timer class to create a timer that fires events at regular intervals. The javax.swing.Timer class is a special type of Swing component that you can use to generate events at regular intervals. It is a simple way to schedule a task to run periodically.

Here's an example of how to create a javax.swing.Timer in Java Swing:

import javax.swing.*;

public class TimerExample {

    public static void main(String[] args) {
        JFrame frame = new JFrame("Timer Example");

        // Create a new Timer object with a delay of 1000ms (1 second)
        Timer timer = new Timer(1000, e -> {
            System.out.println("Timer event occurred");
        });

        // Start the timer
        timer.start();

        // Set up the JFrame
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setSize(300, 300);
        frame.setVisible(true);
    }
}

In this example, we create a new javax.swing.Timer object with a delay of 1000ms (1 second). We then start the timer by calling the start() method. Finally, we set up a basic JFrame with a title, size, and visibility.

The timer will generate an event every 1000ms (1 second) and print a message to the console. You can change the delay to any value you like, depending on the needs of your application.