How to draw an image on screen in Java?

Please help draw my image on screen.  Below is the code I have been struggling with only one module.  I cannot get the image draw to screen.  Can you please help me.

import java.awt.Graphics;
import java.awt.Image;
import java.awt.Toolkit;
import javax.swing.JFrame;
import javax.swing.JPanel;

public class DrawImageToScreen {
   
    public static void main(String[] args) {
   
        // TODO code application logic here
        JFrame frame= new JFrame("JavaTutorial.net");      
      //frame.getContentPane().add(new AsycudaWorld());
        Image image = Toolkit.getDefaultToolkit().getImage("TestingInternetConnection.jpg");
        Graphics g = null;
        g.drawString("Hello to JavaTutorial.net", 10, 10);
        //g.drawImage(image, 0, 0, frame);

      frame.setSize(800, 600);
      frame.setVisible(true);
      frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
      frame.setResizable(false);
   
    }
}