package Termin13;

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

public class FrameEx {
	public static void main(String[]args) {
		new Frame();
	}
}

class Frame extends JFrame{
	public Frame() {
		setTitle("test");
		setBounds(100,100,500,500);
		add(new JComponent() {
			@Override
			public void paintComponent(Graphics g) {
				g.drawLine(20, 300, 170, 170);
				g.drawLine(170, 170, 170, 300);
				g.drawLine(170, 300, 20, 300);
				g.drawOval(250, 250, 100, 100);
			}
		});
		setVisible(true);
	}
}