Не появляется картинка на JFrame

import java.awt.Graphics;
import java.awt.Image;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;

import javax.imageio.ImageIO;
import javax.swing.ImageIcon;
import javax.swing.JFrame;

public class Frame extends JFrame{

    public static void main(String[] args) throws IOException {
        File file = new File("back.jpd");
        JFrame Frame = new JFrame();
        Frame.setSize(500, 500);
        Frame.setVisible(true);
        Frame.setResizable(false);
    }
    public static void draw(Graphics g) {
        Image img = new ImageIcon("back.jpd").getImage();
        g.drawImage(img, 3, 4, null);
    }

}