trying to print a jPanel

[mes123]

I've written a simple test script, It has a jFrame containing two jPanels, one with control buttons and the other with some graphics. I cannot work out how to print the jPanel containing my graphical content. The best I have achieved so far is to print a grey square the same size as the jPanel, but not it's contents (at present the contents are just a couple of circles to test the script, but will ultimately be a company invoice).

Can anyone help me to get this to work please? Things are starting to get a little desperate.

/*
 * gPrint.java
 *
 * Created on 16 November 2005, 15:21
 */
import javax.print.*;
import javax.print.event.*;
import javax.print.attribute.*;
import java.awt.print.*;
import java.awt.event.*;
import java.io.*;
import javax.swing.*;       // For JPanel, etc.
import java.awt.*;           // For Graphics, etc.
import java.awt.geom.*;      // For Ellipse2D, etc.

/**
 *
 * @author  gary
 */
public class gPrint extends javax.swing.JFrame {
    
    /** Creates new form gPrint */
    public gPrint() {
        initComponents();
    }
    
    private Rectangle2D.Double square, square2;
    private Ellipse2D.Double circle;
   
    
    /** This method is called from within the constructor to
     * initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is
     * always regenerated by the Form Editor.
     */
    private void initComponents() {
        control = new javax.swing.JPanel();
        jButton1 = new javax.swing.JButton();
        jButton2 = new javax.swing.JButton();
        content = new javax.swing.JPanel();

        content.setBackground(Color.white);

        getContentPane().setLayout(new org.netbeans.lib.awtextra.AbsoluteLayout());

        addWindowListener(new java.awt.event.WindowAdapter() {
            public void windowClosed(java.awt.event.WindowEvent evt) {
                exiting(evt);
            }
            public void windowClosing(java.awt.event.WindowEvent evt) {
                exitForm(evt);
            }
        });

        control.setBorder(new javax.swing.border.LineBorder(new java.awt.Color(0, 0, 0)));
        jButton1.setText("Print or DIE!");
        jButton1.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton1ActionPerformed(evt);
            }
        });

        control.add(jButton1);

        jButton2.setText("Draw Me");
        jButton2.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton2ActionPerformed(evt);
            }
        });

        control.add(jButton2);

        getContentPane().add(control, new org.netbeans.lib.awtextra.AbsoluteConstraints(0, 0, 633, 100));

        content.setBorder(new javax.swing.border.BevelBorder(javax.swing.border.BevelBorder.RAISED, new java.awt.Color(255, 0, 0), new java.awt.Color(255, 51, 51), new java.awt.Color(0, 204, 0), new java.awt.Color(0, 255, 51)));
        getContentPane().add(content, new org.netbeans.lib.awtextra.AbsoluteConstraints(0, 100, 630, 810));

        pack();
    }

    private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
        

    }

    private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {
        // draw a funky invoice frame :)
       square =  new Rectangle2D.Double(30, 30, 550, 550);
       square2 =  new Rectangle2D.Double(250, 250, 50, 50);
       circle =  new Ellipse2D.Double(80, 80, 350, 350);
       paintComponent(content.getGraphics());
       
    }

    private void exiting(java.awt.event.WindowEvent evt) {
        // TODO add your handling code here:
        System.exit(0);
    }
    
    /** Exit the Application */
    private void exitForm(java.awt.event.WindowEvent evt) {
        System.exit(0);
    }
    
    /**
     * @param args the command line arguments
     */
    public static void main(String args[]) {
        new gPrint().show();
    }
    
    public void paintComponent(Graphics g) {
        Graphics2D g2d = (Graphics2D)g;
        g2d.setStroke(new BasicStroke(10));
        g2d.draw(square2);
        g2d.draw(square);
        g2d.draw(circle);
        
    }
    
    public int print(Graphics g, PageFormat pageFormat, int pageIndex) {
        
       int x = (int)pageFormat.getImageableX();
       int y = (int)pageFormat.getImageableY();
       Graphics2D g2d = (Graphics2D)g;
       g2d.translate(x, y);
       if (pageIndex == 0) {
         paint(g2d);
         return Printable.PAGE_EXISTS;
       } else {
         return Printable.NO_SUCH_PAGE;
       }
     }
 
    
    // Variables declaration - do not modify
    private javax.swing.JPanel content;
    private javax.swing.JPanel control;
    private javax.swing.JButton jButton1;
    private javax.swing.JButton jButton2;
    // End of variables declaration
    
}

Thanks in advance.