Flag

package acm;

import java.awt.Color;
import java.awt.Graphics;

import javax.swing.JComponent;
import javax.swing.JFrame;

public class BD_Flag {

	private static JFrame frame;

	public static void main(String[] args) {
		
		frame = new JFrame();
		frame.setBounds(100, 100, 800, 600);
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		Flag flag = new Flag();
		frame.getContentPane().add(flag);
		frame.setVisible(true);
	}
}

class Flag extends JComponent{
	@Override
	protected void paintComponent(Graphics g) {
		g.setColor(new Color(0, 103, 71));
		g.fillRect(50, 50, 720, 432);
		g.setColor(new Color(218, 41, 28));
		g.fillOval(230, 122, 288, 288);
		super.paintComponent(g);
	}
}