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copied!<p>Using your custom panel's <code>paint()</code> method, render the content into a <a href="http://download.oracle.com/javase/7/docs/api/java/awt/image/BufferedImage.html" rel="nofollow noreferrer"><code>BufferedImage</code></a>.</p> <p>Addendum: Here's a more complete example of the approach, which simply scales the component by half. You'll want to preserve the aspect ratio in your actual application.</p> <p><img src="https://i.stack.imgur.com/VVjWC.png" alt="enter image description here"></p> <pre><code>import java.awt.Dimension; import java.awt.EventQueue; import java.awt.Graphics2D; import java.awt.GridLayout; import java.awt.geom.AffineTransform; import java.awt.image.AffineTransformOp; import java.awt.image.BufferedImage; import javax.swing.ImageIcon; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JPanel; import javax.swing.JScrollPane; /** @see https://stackoverflow.com/questions/7026822 */ public class PanelPaint extends JPanel { private static final double SCALE = 0.5; public PanelPaint() { super(new GridLayout(0, 1)); final MyPanel panel = new MyPanel(); JScrollPane scroll = new JScrollPane(panel); scroll.getViewport().setPreferredSize(new Dimension(320, 240)); this.add(scroll); EventQueue.invokeLater(new Runnable() { @Override public void run() { add(new JLabel(new ImageIcon(createImage(panel)))); } }); } private BufferedImage createImage(MyPanel panel) { Dimension size = panel.getPreferredSize(); BufferedImage image = new BufferedImage( size.width, size.height, BufferedImage.TYPE_INT_ARGB); Graphics2D g2d = image.createGraphics(); panel.paint(g2d); g2d.dispose(); AffineTransform at = new AffineTransform(); at.scale(SCALE, SCALE); AffineTransformOp scaleOp = new AffineTransformOp(at, AffineTransformOp.TYPE_BILINEAR); return scaleOp.filter(image, null); } private static class MyPanel extends JPanel { private static final int N = 16; public MyPanel() { super(true); this.setLayout(new GridLayout(N, N)); for (int i = 0; i < N * N; i++) { this.add(new JLabel(String.valueOf(i) + " ")); } } } private void display() { JFrame f = new JFrame("PanelPaint"); f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); f.add(this); f.pack(); f.setLocationRelativeTo(null); f.setVisible(true); } public static void main(String[] args) { EventQueue.invokeLater(new Runnable() { @Override public void run() { new PanelPaint().display(); } }); } } </code></pre> <p>As shown <a href="https://stackoverflow.com/questions/4216123/how-to-scale-a-bufferedimage/4216635#4216635">here</a>, you can scale the rendering to fit the destination's <a href="http://download.oracle.com/javase/7/docs/technotes/guides/jps/spec/attributes.fm5.html#997393" rel="nofollow noreferrer"><code>MediaPrintableArea</code></a>, or use <a href="http://download.oracle.com/javase/7/docs/api/java/awt/image/BufferedImage.html#getSubimage%28int,%20int,%20int,%20int%29" rel="nofollow noreferrer"><code>getSubimage()</code></a> to divide the content into pages as desired.</p>

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