import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.image.*;

import javax.swing.*;

@SuppressWarnings("serial")
public class Applet2018a extends JApplet implements ActionListener {
	JPanel controlPanel;
	int x = 0;
	int fps = 24;
	Timer timer = new Timer(1000 / fps, this);
	JPanel drawPanel = new JPanel() {
		@Override
		public void paint(Graphics g) {
			BufferedImage image =
					new BufferedImage(drawPanel.getWidth(),
							drawPanel.getHeight(),
							BufferedImage.TYPE_INT_RGB);
			Graphics g2 = image.getGraphics();
			g2.setColor(Color.CYAN);
			g2.fillRect(0, 0, drawPanel.getWidth(), drawPanel.getHeight());
			g2.setColor(Color.BLACK);
			for (int i = 0; i < 80; i++) {
				for (int j = 0; j < 80; j++) {
					g2.fillOval(x + 5 * i, x + 5 * j, 4, 4);
				}
			}
			g.drawImage(image, 0, 0, null);
		}
	};
	
	@Override
	public void init() {
//		this.setLayout(new GridLayout(1, 2));
		this.add(drawPanel);
		timer.start();
	}

	@Override
	public void actionPerformed(ActionEvent e) {
		x += 1;
		drawPanel.repaint();
	}
}