Graphics question

[Guy]

Hello! I am trying to make a simple program in which a circle can be moved around the screen using the wasd keys. I have managed to do it in a different program using a JLabel, but now trying to add 2d graphics to my program is confusing me.
Here is my code so far:

import java.awt.*;
import javax.swing.*;
import java.awt.geom.*;
import java.awt.event.*;

public class Game extends JFrame{
	
	int x = 715; // x position of circle
	int y = 400; // y position of circle
	char input; // user key input
	Graphics c; //what do I initialize this to?
	
	JFrame f = new JFrame();
	
	public Game() {
		f.setTitle("Game");
		f.setSize(1430, 800);
		f.setResizable(true);
		f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		
		draw(c);
		
		f.setVisible(true);
	}
	
	public void draw(Graphics c) {
		Graphics2D c2D = (Graphics2D)c;
		c2D.setColor(Color.black);
		BasicStroke bPen = new BasicStroke();
		c2D.setStroke(bPen);
		Ellipse2D.Float ball = new Ellipse2D.Float(600, 350, 50, 50);
		c2D.fill(ball);
		
		f.add(c2D); // error: The method add(Component) in the type Container is not applicable for the arguments (Graphics2D)
		}

	
	public static void main(String[] args) {
		Game w1 = new Game();
	}
}

My to problems are:
1. I don't know what to initialize 'Graphics c' to.
EDIT: I tried to initialize by writing Graphics c = new Graphics(); this returned the error Cannot instantiate the type
Graphics.

The code works fine without that line of code but then if I try call the draw method:
draw(c); it can't find the variable c, however the method itself works fine.

public void draw(Graphics c) { //What is the Graphics c in the method parameters?
Graphics2D c2D = (Graphics2D)c;
//etc
}

2. When I add it to my frame 'f.add(c2D)' it says The method add(Component) in the type Container is not applicable for the arguments (Graphics2D)

[TheTF]

I think you initialize it by writing "Graphics c = new Graphics();". Did it work?

[Guy]

I tried that already - it comes up with the error: Cannot instantiate the type
Graphics
Is there something else I need to import?

[Jodokus]

You're doing a lot wrong. You don't have to initialize graphics or add it to a frame: just see it as a gift from "super".
I can try to explain, but just following a tutorial is much better:
Lesson: Performing Custom Painting (The Java™ Tutorials > Creating a GUI With JFC/Swing)

[Guy]

Thanks very much for the link!

[Fubarable]

I think you initialize it by writing "Graphics c = new Graphics();". Did it work?

Original poster, just to be sure, you know to completely ignore this "advice" by The TF, right?

[Guy]

Yeah, thanks.