public static void fillCircle(Graphics g, int centerX, int centerY, int diam){
		g.fillOval((int) (centerX-diam/2), (int) (centerY-diam/2), diam, diam);
	}
public static void fillCircle ( Graphics g , int centerX , int centerY , int diam ) { g . fillOval ( ( int ) ( centerX - diam / 2 ) , ( int ) ( centerY - diam / 2 ) , diam , diam ) ; }
Draws a circle with the specified diameter using the given point coordinates as center
and fills it with the current color of the graphics context.
@param g Graphics context
@param centerX X coordinate of circle center
@param centerY Y coordinate of circle center
@param diam Circle diameter