Computational Applications :: JAVA Greenfoot

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What is JAVA Greenfoot?

Greenfoot is an interactive Java development environment developed primarily for educational purposes.

What is Greenfoot used for?

Easy development of two-dimensional graphical applications, such as simulations and interactive games.
Concepts such as the class/object relationship, methods, parameters, object interaction, and others, are implicitly conveyed through visualizations and guided interactions.

Greenfoot Framework

The Greenfoot framework consists of object interaction (BlueJ) and object visualization (microworlds) used to create a wide range of programs that can be visualized in a two-dimensional grid. The Greenfoot framework has two main responsibilities

Make it easy to create graphical representations of objects
Control the execution (start, stop, step) of a simulation loop

To accomplish these things the greenfoot framework supplies a base class GreenfootObject which should be extended by all classes that wish to visualise themselfes. The two most important methods that must be implemented are the getImage() method which should return the image of the object, and the act() method which will be called in each step of the simulation loop.

Scenarios

Scenarios are a set of classes that implements the base classes for a specific application. Below is the turtle graphics scenario.

greenfoot_turtlegraphics