import javax.swing.*;
import java.awt.*;
public class Joonis1 extends JComponent{
   
   public void paintComponent(Graphics g){
      g.drawRect(10, 20, 30, 40); //vasakult, ülalt, laius, kõrgus
	  g.fillOval(50, 20, 40, 30);
	  g.drawLine(100, 20, 110, 50); //x1, y1, x2, y2
	  g.drawString("Tere!", 40, 80);
   }
   
   public static void main(String[] arg){
      JFrame f=new JFrame("Esimene aken");
	  f.setSize(300, 200);
	  f.getContentPane().add(new Joonis1());
	  f.setVisible(true);
	  f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
   }
}