Canberk

import javax.swing.*;
import java.awt.*;

//public class Canberk extends JFrame{
public class Main extends Canvas{

    final int TITLE_BAR_HEIGHT = 20;
    int x, y, radius;
    int dx, dy;

    public Main(){

        this.x = 20;
        this.y = 50;
        this.radius = 100;
        this.dx = 1;
        this.dy = 1;

        JFrame frame = new JFrame();

        frame.setSize(640, 640);
        frame.setTitle("Shapes");
        frame.setVisible(true);
        frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
    }

    public void paint(Graphics g) {
        super.paint(g);

        g.clearRect(0, 0, getWidth(), getHeight());
        g.setColor(Color.BLUE);
        g.drawOval((getWidth()-radius)/2 , (getHeight()-
                radius+TITLE_BAR_HEIGHT)/2, radius, radius);

        g.setColor(Color.MAGENTA);
        g.drawRect((getWidth()-150)/3, ((getHeight()-150+TITLE_BAR_HEIGHT)/3),
                radius, radius);

        g.setColor(Color.MAGENTA);
        g.drawRect(((getWidth()-80)/3)*2,
                (getHeight()-150+TITLE_BAR_HEIGHT)/3, radius, radius);
            }

    public static void main(String[] args) {
        new Main();
    }
}