public boolean drawImage(Image img,int x,int y,int width,int height,ImageObserver observer){
  return drawImage(img,x,y,width,height,null,observer);
}

public boolean drawImage ( Image img , int x , int y , int width , int height , ImageObserver observer ) { return drawImage ( img , x , y , width , height , null , observer ) ; }
draws an image scaled to x , y , w , h in nonblocking mode with a callback object .
