Drawing Shapes

In this tutorial, we will use several classes. these are nomrally shown in a Class Diagram with attributes and methods clearly defined.

Implementation

Below, you can see the Parent and the Child classes side-by-side. Make note of the following:

• the keyword extends is used on the first line of each child's class definition to specify the parent
• the method super is used in the child's constructor to enusre that the parent constructor is executed as the starting point for the child - this ensures inheritance