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

public class Ex3_0 extends JPanel {
	public void paintComponent(Graphics g) {
		g.setColor(Color.black);
		g.drawRect(10, 10, 100, 40);
		g.drawRect(10, 50, 100, 60);
		g.fillRect(20, 55, 80, 50);
		
		g.setColor(Color.orange);
		g.fillOval(15, 15, 30, 30);
		
		g.setColor(new Color(255, 100, 0));
		g.fillOval(45, 15, 30, 30);
		
		g.setColor(new Color(100, 100, 255));
		g.fillOval(75, 15, 30, 30);
	}
	
	public static void main(String[] args) {
		JFrame app = new JFrame();
		app.add(new Ex3_0());
		app.setSize(150, 200);
		app.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		app.setVisible(true);
	}
}