How do you set an image into the background of a JPanel or JFrame?

Question

How do you set an image into the background of a JPanel or JFrame?

Answer 1

Something like this, Ive thrown in an ImageIcon on a
button too for good measure.
import java.awt.*;
import javax.swing.*;
public class JFrameImage extends JFrame {
public JFrameImage() {
Container c    = getContentPane();
JPanel panel = new JPanel(){
             public void paintComponent(Graphics g)     {
ImageIcon img = new
= new ImageIcon("background.jpg");
                  g.drawImage(img.getImage(), 0, 0, null);
                  super.paintComponent(g);
        panel.setOpaque(false);
ImageIcon icon = new ImageIcon("onButton.jpg");
JButton button = new JButton(icon);
panel.add(button);
c.add(panel);
public static void main(String[] args) {
JFrameImage frame = new JFrameImage();
frame.setSize(200,200);
frame.setVisible(true);
Going totally fancy pants
ImageIcon bigImage = new ImageIcon(bgImage.getImage().getScaledInstance(getWidth(), getHeight(),Image.SCALE_REPLICATE));
g.drawImage(bigImage.getImage(), 0, 0, this); Will scale the image to the size of the panel
whereas
for (int y = 0; y  < getHeight(); y = y + image.getHeight(null))
for (int x = 0; x< getWidth(); x = x + image.getWidth(null))
g.drawImage(image, x, y, this); Will give a tiled effect
Try tiling with an animated gif and bring your processor to a standstill.