How do I add a background image to my JFrame?

I need help with java, setting pic to background in Jframe?

• Allright, Im having some trouble with this, Im making a board game for my comp sci class and i cant figure out how to set an image from my computer/the interweb as the background. Im only having trouble bc he class is C++ based and this is in java. Can anyone either tell me how, or just take the code below and write it in. also if you were wondering its a My Little Pony based candy-land game here is my code so far (i left out the whole paint section due to length) import java.awt.*; import javax.swing.*; class GFrame extends JFrame // create frame for canvas { public GFrame() // constructor { super("Friendship Is Magic!"); setBounds(50,50,1080,840);// set frame setDefaultCloseOperation(JFrame.EXIT_O… Container con=this.getContentPane(); // inherit main frame con.setBackground(Color.WHITE); // paint background GCanvas canvas=new GCanvas(); // create drawing canvas con.add(canvas); setVisible(true);// add to frame and show } public static void main(String arg[]) {new GFrame();} } class GCanvas extends Canvas { public void paint(Graphics g) { Graphics2D g2D=(Graphics2D) g; // cast to 2D g2D.setRenderingHint(RenderingHints.KE… RenderingHints.VALUE_ANTIALIAS_ON); Thanks

• Answer:

  I tried to comment the code as much as possible to help you understand it better. Take a look, just load it into you're compiler or compile this file however you usually compile your programs. As for the image path make sure you put the image in the same directory as your project, if you're using an IDE such as NetBeans or Eclipse put your image in the folder labeled "src". --------------------------------------… import javax.imageio.ImageIO; import javax.swing.*; import java.awt.*; import java.awt.image.BufferedImage; public class Main extends JFrame { public static void main(String[] args) { SwingUtilities.invokeLater( new Runnable() { @Override public void run() { try { UIManager.setLookAndFeel(UIManager.getSy… } catch(Exception err) { err.printStackTrace(); } new Main().setVisible(true); } }); } // Used to load local files... Files in you're project directory. ClassLoader ldr = getClass().getClassLoader(); // A BufferedImage object holding you're background image. BufferedImage backgroundImage; // The custom JPanel that draws an image to its background. PaintSurface canvas = new PaintSurface(); public Main() { try { // Reads "background.jpg" into the BufferedImage. backgroundImage = ImageIO.read(ldr.getResource("background… } catch(Exception err) { JOptionPane.showMessageDialog(this, "Error reading image... Check to make sure you specified the correct\n" + "relative path.", "Error", JOptionPane.ERROR_MESSAGE); } setSize(600, 400); setLocationRelativeTo(null); setTitle("My Little Pony: Candy Land"); // Add your custom JPanel to your JFrame, since you have not set // a layout to your JFrame the canvas will fill the window. add(canvas); } class PaintSurface extends JPanel { // Overrides the method paintComponent() in the JPanel class // responsible for painting of the JPanel. @Override protected void paintComponent(Graphics g) { Graphics2D g2 = (Graphics2D)g; if(backgroundImage!=null) { // If backgroundImage was created successfully paint it to the JPanel // at position 0x 0y. g2.drawImage(backgroundImage, 0, 0, this); // Use the line below instead if you want to stretch the image to the size // of your JPanel. //g2.drawImage(backgroundImage, 0, 0, getWidth(), getHeight(), this); } else { // Bored... use a pretty gradient if the image doesn't load :) g2.setPaint(new GradientPaint(getWidth()/2, 0, new Color(0, 174, 239), getWidth()/2, getHeight(), new Color(63, 6, 128))); g2.fillRect(0, 0, getWidth(), getHeight()); } } } }