import java.awt.AWTException;
import java.awt.FlowLayout;
import java.awt.Graphics;
import java.awt.Rectangle;
import java.awt.Robot;
import java.awt.image.BufferedImage;
import javax.swing.JButton;
import javax.swing.JComponent;
import javax.swing.JFrame;

public class CaptureTest3 {
    private Robot robot; 
    private BufferedImage image;

    public CaptureTest3() {
        JFrame frame = new JFrame("Capture Test");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        try {
            robot = new Robot();
        } catch (AWTException ex) {
            ex.printStackTrace();
            return;
        }

        Rectangle bounds = new Rectangle(100, 100, 400, 400);
        image = robot.createScreenCapture(bounds);
	frame.setBounds(bounds);

	frame.setContentPane(new ImageComponent());
	frame.getContentPane().add(new JButton("Button"));

	frame.setVisible(true);
    }

    class ImageComponent extends JComponent {
	public ImageComponent() {
	    super();
	    setLayout(new FlowLayout());
	}

	public void paintComponent(Graphics g) {
	    g.drawImage(image, 0, 0, this);
	}
    }

    public static void main(String[] args) {
	new CaptureTest3();
    }
}