The abstract in the statement:


   public abstract void fillArc(int x, int y, int width, int height, int startAngle, int arcAngle)

Means that the method fillArc() is not actually implemented in the Graphics class. Normally, this would mean that you would have to implement (i.e., write) the fillArc() method before you could use it. But, don't worry, all methods in the Graphics class have already been implemented in the Windows operating system.