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    <blockquote> <p>..the background image loses his original size and gets very tiny. </p> </blockquote> <p>That is because the preferred size for a panel is 0x0 until components are put in it.</p> <p>There are at least two ways to solve this:</p> <ol> <li>Add content to the panels.</li> <li>Override <code>getPreferredSize()</code> to return the <code>Dimension</code> of the image.</li> </ol> <p>The first is optimal, but I'll show how to do the 2nd (less code).</p> <p><img src="https://i.stack.imgur.com/zVOxE.png" alt="Image Test"></p> <pre><code>import java.awt.*; import java.awt.image.BufferedImage; import javax.swing.ImageIcon; import javax.swing.JFrame; import javax.swing.JPanel; public class ImageTest { public static void main(String[] args) { ImageFrame frame = new ImageFrame(); //frame.setSize(640,480); frame.pack(); frame.setVisible(true); } } class ImagePanel extends JPanel { private Image img; public ImagePanel(String img) { this(new ImageIcon(img).getImage()); } public ImagePanel(Image img) { this.img = img; } public void paintComponent(Graphics g) { super.paintComponent(g); // a panel IS an ImageObserver, so use it here. g.drawImage(img, 0, 0, this); } @Override public Dimension getPreferredSize() { int w = img.getWidth(this); int h = img.getHeight(this); return new Dimension(w,h); } } class ImageFrame extends JFrame { public ImageFrame() { setLayout(new BorderLayout(2,2)); setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE); ImagePanel topPanel = new ImagePanel(new BufferedImage(200,20,BufferedImage.TYPE_INT_RGB)); ImagePanel bodyPanel = new ImagePanel(new BufferedImage(200,100,BufferedImage.TYPE_INT_RGB)); add(topPanel, BorderLayout.NORTH); add(bodyPanel, BorderLayout.SOUTH); pack(); } } </code></pre>
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    1. POAlign panels with backgrounds correctly?
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    1. USAndrew Thompson
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    1. COWow, that's a great code! I even can add new components to the panels. I can't think of a better solution, thank you! Stay Fresh!
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    2. CO*"I can't think of a better solution,"* I can think of several. The first was listed in my answer, while the 2nd idea described would 'mess with the first'.
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