Error de compilacion de clase chica

[CMushroom]

por que esta clase sale error:

Código:

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

public class Bomb extends Sprite {
	private int stepSize;
	private ImageIcon bombImage;
	public Bomb(){
		x = initialX;
		y = initialY;
		width = 5;
		height = 10;
		stepSize = 10;
		bombImage = new ImageIcon("imagddes.jpg");
		}
		
	public void draw(JPanel panel){
		Graphics paper = panel.getGraphics();
		bombImage.paintIcon(this, paper, x, y);
		}
		
	public void move(){
		y = y + stepSize;
	}
}

--------------------Configuration: <Default>--------------------
C:\Documents and Settings\Administrador\Mis documentos\Bomb.java:26: error: method paintIcon in class ImageIcon cannot be applied to given types;
bombImage.paintIcon(this, paper, x, y);
^
required: Component,Graphics,int,int
found: Bomb,Graphics,int,int
reason: actual argument Bomb cannot be converted to Component by method invocation conversion
1 error

Process completed.

error: method paintIcon in class ImageIcon cannot be applied to given types;

ereda de esta clase:

Código:

public class Sprite{
	protected int x, y, width, height;
	public int getX(){
		return x;
	}

	public int getY(){
		return y;
	}
	
	public int getWidth(){
		return width;
	}
	
	public int getHeight(){
		return height;
	}
}

y este no es necesario de momento es el principal

Código:

import java.awt.*;
import java.awt.event.*;

public class newGame extends Frame implements ActionListener, WindowListener{
	
private Graphics paper;
private Defender defender;
private Laser laser;
private Bomb bomb;

	public static void main (String[] args){
		newGame Jugar = new newGame();
		Jugar.setSize(600,634);
		Jugar.setVisible(true);
	}
	
	private void newGame(){
		setTitle("Invasores del espacio");
		setLayout(new FlowLayout());
		defender = new Defender();
		alien = new Alien();
		timer.start();
		this.addWindowListener(this);
	}
	
	private void timer_Tick(){
		if (bomb == null){
			bomb = new Bomb(alien.getX(), alien.getY());
			}
		moveAll();
		drawAll();
		checkHits();
	}
	
	public void mouseClicked(MouseEvent event){
		int initialX = defender.getX();
		int initialY = defender.getY();
		if (laser == null){
		laser = new Laser(initialX, initialY);
		}
	}
	
	public void mouseMoved(MouseEvent event){
		defender.move(event.getX());
	}
	
	private void moveAll(){
		alien.move();
		if (bomb != null){
			bomb.move();
		}
		if (laser != null){
			laser.move();
		}
	}
	
	private void drawAll(){
		Graphics paper = panel.getGraphics();
		paper.setColor(Color.white);
		paper.fillRect(0, 0, panel.getWidth(), panel.getHeight());
		paper.setColor(Color.black);
		defender.draw(panel);
		alien.draw(panel);
		
		if (laser != null){
			laser.draw(panel);
		}
		
		if (bomb != null){
			bomb.draw(panel);
		}
	}
	
	private void checkHits(){
		if (collides(laser, alien)){
			endGame("user");
		}
		
		else{
			if (collides(bomb, defender)){
				endGame("alien");
			}
		}
		
		if (bomb != null){
			if (bomb.getY() > panel.getHeight()){
				bomb = null;
			}
		}
		
		if (laser != null){
			if (laser.getY() < 0){
				laser = null;
			}
		}
	
	}

	private boolean collides(Sprite one, Sprite two){
		if (one == null || two == null){
			return false;
		}
	
		if ( one.getX() > two.getX() && one.getY() < (two.getY() + two.getHeight()) && (one.getX() + one.getWidth()) < (two.getX() + two.getWidth()) && (one.getY() + one.getWidth()) > (two.getY())){
			return true;
		}
		
		else{
			return false;
		}
	}

	private void endGame(String winner){
		laser = null;
		bomb = null;
		timer.stop();
		JOptionPane.showMessageDialog(null,"game over - " + winner + " wins");
	}
}

public class Sprite{
	protected int x, y, width, height;
	public int getX(){
		return x;
	}

	public int getY(){
		return y;
	}
	
	public int getWidth(){
		return width;
	}
	
	public int getHeight(){
		return height;
	}
}

public class Laser extends Sprite{
	private int stepSize;
	private ImageIcon laserImage;
	public Laser(int newX, int newY){
		x = newX;
		y = newY;
		width = 5;
		height = 5;
		stepSize = 10;
		laserImage = new ImageIcon("laser.jpg");
	}
		
	public void draw(JPanel panel){
		Graphics paper = panel.getGraphics();
		laserImage.paintIcon(this, paper, x, y);
	}
	
	public void move(){
		y = y - stepSize;
	}
	
	public void windowClosing(WindowEvent Event){
    	System.exit(0);
    }
    
    public void windowIconified(WindowEvent Event){	
    }
    
    public void windowOpened(WindowEvent Event){
    }
    
    public void windowClosed(WindowEvent Event){
    }
    
    public void windowDeiconified(WindowEvent Event){
    }
    
    public void windowActivated(WindowEvent Event){
    }
    
    public void windowDeactivated(WindowEvent Event){
    }
    
}