Graphics.drawImage doesn't draw in Java

Question

I am trying to draw images with g.drawImage(), However, it does not display on the screen. So can you please examine my code and tell me what the reason may be?

private char enemyBoard[][] = new char[10][10]; 
private Rectangle r[][] = new Rectangle[10][10];
private int size;  
Image img;
public EnemyPanel()
{
    size=Constant.rectSize;
    for(int i=0;i<10;i++){
        for(int j=0;j<10;j++){
            enemyBoard[i][j]='*'; //initialization type
            r[i][j]= new Rectangle(j*size+30,i*size+30, size, size);         
        }
    }

    img=Toolkit.getDefaultToolkit().createImage("/edu/iyte/ceng316/resource/kurukafa2.jpg";);

}


  public void paintComponent(Graphics g){     
        super.paintComponent(g);

        for(int i=0;i<10;i++){
            for(int j=0;j<10;j++)
                    g.drawImage(img,(int)r[i][j].getX(),(int)r[i][j].getY(),null);                                                          
            }
        }        
  }

Answer 1

public void loadImage()
   {
     try
     {
     img=ImageIO.read(this.getClass().getResource(Constant.kurukafa));
     }
     catch(IOException e)
     {
     e.printStackTrace();
     } 
   }

Okey I solved my problem with this.