I'm trying to do a printable component (an invoice document). I use JComponent instead of JPanel because I don't want a background. The component has many subcomponents.

The main component implements Printable and has a print-method that is calling printAll(g) so that all subcomponents should be printed. But my subcomponents doesn't print.

What am I missing? Does all subcomponents also has to implement Printable?

import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.GridLayout;
import java.awt.print.PageFormat;
import java.awt.print.Printable;
import java.awt.print.PrinterException;
import java.awt.print.PrinterJob;

import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;

public class PPanel extends JComponent implements Printable {
    static double w;
    static double h;

    public PPanel() {
        this.setLayout(new BorderLayout());

        this.add(new JLabel("Document Body"), BorderLayout.CENTER);
        this.add(new Header(), BorderLayout.NORTH);
        this.add(new Footer(), BorderLayout.SOUTH);
    }

    class Header extends JComponent {

        public Header() {
            this.setLayout(new BorderLayout());

            this.add(new TopHeader(), BorderLayout.NORTH);
            this.add(new LowHeader(), BorderLayout.SOUTH);
        }

    }

    class TopHeader extends JComponent {
        public TopHeader() {
            this.setLayout(new BorderLayout());
            JLabel companyName = new JLabel("Company name");
            JLabel docType = new JLabel("Document type");
            this.add(companyName, BorderLayout.WEST);
            this.add(docType, BorderLayout.EAST);
        }
    }

    class LowHeader extends JComponent {
        public LowHeader() {
            this.setLayout(new GridLayout(0,2));

            JLabel col1 = new JLabel("Column 1");
            JLabel col2 = new JLabel("Column 2");

            this.add(col1);
            this.add(col2);
        }
    }

    class Footer extends JComponent {
        public Footer() {
            this.setLayout(new GridLayout(0,2));

            JLabel addr = new JLabel("Address");
            JLabel sum = new JLabel("Sum");

            this.add(addr);
            this.add(sum);
        }
    }

    public static void main(String[] args) {
        final PPanel p = new PPanel();
        PrinterJob job = PrinterJob.getPrinterJob();
        job.setPrintable(p);
        try {
            job.print();
        } catch (PrinterException ex) {
            // print failed
        }
            // Preview
        new JFrame() {{ getContentPane().add(p); this.setSize((int)w, (int)h); setVisible(true); }};

    }

    @Override
    public int print(Graphics g, PageFormat pf, int page)
            throws PrinterException {
        if (page > 0) {
            return NO_SUCH_PAGE;
        }

        Graphics2D g2d = (Graphics2D)g;
        g2d.translate(pf.getImageableX(), pf.getImageableY());

        w = pf.getImageableWidth();
        h = pf.getHeight();

        this.setSize((int)w, (int)h);
        this.setPreferredSize(new Dimension((int)w, (int)h));
        this.doLayout();

        this.printAll(g);
        return PAGE_EXISTS;
    }
}