Java tutorial
import java.awt.Dimension; import java.awt.Graphics; import java.awt.Image; import javax.swing.ImageIcon; import javax.swing.JFrame; import javax.swing.JPanel; public class ImageTest { public static void main(String[] args) { ImagePanel panel = new ImagePanel(new ImageIcon("images/background.png").getImage()); JFrame frame = new JFrame(); frame.getContentPane().add(panel); 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; Dimension size = new Dimension(img.getWidth(null), img.getHeight(null)); setPreferredSize(size); setMinimumSize(size); setMaximumSize(size); setSize(size); setLayout(null); } public void paintComponent(Graphics g) { g.drawImage(img, 0, 0, null); } }