adding a button

[budsy remo]

i've made a very small code and now i want to add a button on top of it but i don't know how . Can somebody help ?

Maybe i am missing an important concept regarding what to add where . So please point me to the right direction

import javax.swing.*;
import java.awt.*;
import java.awt.geom.*;
public class Draw
{
	public static void main(String... args)
	{
		EventQueue.invokeLater(new Runnable()
		{
			public void run()
			{
			CFrame r1=new CFrame();
			r1.setDefaultCloseOperation(r1.EXIT_ON_CLOSE);
			r1.setVisible(true);
			}
		});
	}
}
class CFrame extends JFrame
{
	CFrame()
	{
		setTitle("DOODOO");
		setSize(400,500);

		JButton b1=new JButton("hellllllllllllllllllllllllloo");
		add(b1);
		
		DaDrw d1=new DaDrw();
		add(d1);
	}
}

class DaDrw extends JComponent
{
		public void paintComponent(Graphics g)
		{
			Graphics2D g2=(Graphics2D)g;
			Rectangle2D r2=new Rectangle2D.Double(0,200,200,100);
			g2.draw(r2);
		
			
			System.out.println("hello");

			
			Line2D p=new Line2D.Double(0,225,400,200);
			g2.draw(p);
			
			Ellipse2D e2=new Ellipse2D.Double();
			e2.setFrame(r2);
			g2.draw(e2);
		}
	
}

[Darryl Burke]

A JFrame has a default BorderLayout, and a BorderLayout has 6 regions, to each of which only one component can be added.
http://download.oracle.com/javase/tutorial/uiswing/layout/border.html

If you want to add the button on top of the DaDrw, first give it an appropriate layout and then add the button to it.
http://download.oracle.com/javase/tutorial/uiswing/layout/index.html

If you want to add the button and the DaDrw to the frame, use the default BorderLayout with appropriate constraints, or set a layout of your choice.