// https://docs.oracle.com/javase/tutorial/uiswing/misc/timer.html

import javax.swing.Timer; 
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import javax.swing.JFrame;

public class Three implements ActionListener {
  int steps; 
  public static void main(String[] args) {
    JFrame b = new JFrame(); 
    b.setSize(200, 300); 
    b.setVisible(true); 
    Timer a = new Timer(200, new Three());
    // https://docs.oracle.com/javase/8/docs/api/javax/swing/Timer.html
    // System.out.println( a ); 
    a.start(); 
  }
  public void actionPerformed(ActionEvent e) {
    System.out.println("I got it... " + ++this.steps); 
  }
}