CMSC 202 — Spring 2013

Source Code Structure

Step One: Important!

To start with this lab, download the project as a zip file from here : Lab 8.

Now you may simply import the zip file as an entire project into Eclipse by going to:

File->Import->General->Existing Projects into Workspace
click "Next"


Then "Select Archive File" and Browse to and select the Lab8.zip file you've just downloaded, then hit finished

Shape Package and Classes

Now that we have our project set up, we will create an additional package for our shapes-- call this package shapes.

The shapes package will contain the following files:

• Shape.java:
  • Represents any shape that can be drawn.
  • We will declare an array of Shape objects in the ShapeDriver class, and initialize each element with a different subclass (Rectangle or Circle).
  • Shape has a single abstract method draw().
  • Drawing all the Shapes in our window means calling draw() on each Shape.
  • This class needs to be declared abstract.
  
  
• Rectangle.java:
  • Inherits from Shape.
  • Overrides the draw() method with a rectangle definition.
  
  
• Circle.java:
  • Inherits from Shape.
  • Overrides the draw() method with a circle definition.

Import Processing Library

Shape.java, Rectangle.java and Circle.java must all import the java processing library:

	import processing.core.*;