Editing Java 2D (section)

===Shapes===
A ''shape'' in Java 2D is a boundary which defines an inside and an outside.  [[Pixel]]s inside the shape are affected by the drawing operation, those outside are not.

Trying to fill a straight [[line segment]] will result in no pixels being affected, as such a shape does not contain any pixels itself.  Instead, a thin [[rectangle]] must be used so that the shape contains some pixels.