PaintingApplet

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

@SuppressWarnings("serial")
public class PaintingApplet extends JApplet implements ActionListener {
    int x = 10;

    Timer timer = new Timer(1, this);

    public void init() {
        timer.start();
    }

    @Override
    public void paint(Graphics g) {
        Image image = drawFrame();
        g.drawImage(image, 0, 0, null);
    }

    Image drawFrame() {
        BufferedImage image = new BufferedImage(
                this.getWidth(), this.getHeight(),
                BufferedImage.TYPE_INT_RGB);
        Graphics g = image.getGraphics();
        g.drawLine(x + 10, 20, x + 100, 100);
        g.setColor(Color.MAGENTA);
        g.drawOval(0, 0, 100, 200);
        g.setColor(new Color(255, 50, 0));
        g.drawRoundRect(10, 10, 90, 190, 20, 20);
        g.fillArc(x, x, 100, 200, 0, 60);
        g.setColor(Color.GRAY);
        return image;
    }

    @Override
    public void actionPerformed(ActionEvent e) {
        x += 1;
        x %= 400;
        repaint();
    }
}