Does anyone know how to display an image from a file on your screen?

I am making a game and am tired of jsut using shapes such as rectangles and other things. Does anyone know how to put in your own files as images onto a JFrame? If you do then please teach me how to set it up and what parameters it takes and other things I need to know about it. Here is what I have done so far but it didn't work.

Code :

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package galaga;
 
import java.awt.Graphics;
import java.awt.Image;
import java.awt.image.ImageObserver;
 
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JPanel;
 
public class HELPME extends JFrame {
	ImageIcon worthless = new ImageIcon("CRAPPYSPACESHIP.png");
	Image SHIP = worthless.getImage();
 
	JFrame HELPME = new JFrame();
	JPanel bob = new JPanel();
 
	public HELPME() {
			super("Title");
			setVisible(true);
			setSize(400, 400);
 
	}
	public void paint(Graphics g) {
 
		g.drawImage(SHIP, 100, 200, 50, 90, ImageObserver );
	}
 
}

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I wrote ImageObserver because I don't know what it is. If anyone tries to help me it will be much appreciated!

Is this the same question as your other post? http://www.javaprogrammingforums.com...wont-work.html

No this is just displaying an image the other one is makeing it move and displaying it