BackgroundLoader

import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.net.URISyntaxException;

import javax.imageio.ImageIO;
import javax.swing.*;


public class Mdam extends JFrame {

    /**
     *
     */
    private static final long serialVersionUID = 1L;
    static JPanel imagePanel =  new JPanel((LayoutManager) new FlowLayout(FlowLayout.LEFT));

    public Mdam() throws IOException, URISyntaxException {
        super("Background");
        setSize(800, 600);
        setLocationRelativeTo(null);
        setDefaultCloseOperation(EXIT_ON_CLOSE);
        setLayout(new BorderLayout());
        BufferedImage img = ImageIO.read(new File(getClass().getResource("sunflower_800x600.jpg").toURI()));
        JLabel background = new JLabel(new ImageIcon(img));
        imagePanel.add(background);
        add(imagePanel);
        setVisible(true);
    }

    public static void main(String[] args) throws IOException, URISyntaxException {
        new Mdam();
    }
}