drawOval
// Draw a circle an ellipse that fits exactly within the rectangle
// with top-left corner (x,y), width w, and height h. Use the
// current color. If h=w, the rectangle is a square, so the
public drawOval(int x, int y, int w, int h)
// Draw a circle with center (15,20) and radius 5
drawOval(10, 15, 10, 10);
// Fill the ellipse that would be drawn by drawOval(x,y,w,h); with
public fillOval(int x, int y, int w, int h)