// From A Beginning Programmer's Guide to Java
// at http://beginwithjava.blogspot.com/

// Referenced in the article 'Start with a JFrame'
// at http://beginwithjava.blogspot.com/2008/07/java-graphics-start-with-jframe.html
// by Mark Graybill, July 2008

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

public class JustaFrame extends JFrame{

  public JustaFrame(){
    super();
  }

  public void paint(Graphics g){
    g.drawLine(10,10,150,150);
  }

  public static void main(String[] arg){
    JustaFrame frame = new JustaFrame();

    frame.setSize(200,200);
    frame.setVisible(true);
  }
}