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If you are new to programming and want to learn how to program, or if you have programming experience but are new to OOP and want to learn OOP, I can't think of a better way to take that first step than through the use of Greenfoot.

Table of contents

Preface

If you are new to programming and want to learn how to program, or if you have programming experience but are new to object-oriented programming (OOP) and want to learn OOP, I can't think of a better way to take that first step than through the use of Greenfoot .

Greenfoot provides a set of interactive visual tools coupled with the Java programming language that makes learning to program both interesting andproductive.

(Note that descriptions of the Greenfoot website contained herein are current as of 02/19/13.)

Overview

A visual interactive programming environment

The greenfoot overview page describes Greenfoot as an Interactive Visual World that "...teaches object orientation with Java."

When programming with Greenfoot, you "Create 'actors' which live in 'worlds' to build games, simulations, and other graphicalprograms."

Greenfoot is both instructive and enjoyable because it is visual and interactive. Visualization and interaction tools are built into the programmingenvironment.

Unlike Scratch and Alice (two programming environments for beginners that use a drag-and-drop approach to programming) , Greenfoot actors "are programmed in standard textual Java code, providing a combination of programming experience in a traditional text-basedlanguage with visual execution."

According to Wikipedia ,

"Greenfoot is an interactive Java development environment designed primarily for educational purposes at the high school and undergraduate level. It allows easy developmentof two-dimensional graphical applications, such as simulations and interactive games.

Greenfoot is being developed and maintained at the University of Kent and La Trobe University , with support from Oracle . It is free software, released under the GPL license. Greenfoot is available for Microsoft Windows , Mac OS X , Linux , Sun Solaris , and any recent JVM ."

Continuing with Wikipedia ,

"Greenfoot aims to motivate learners quickly by providing easy access to animated graphics, sound and interaction. The environment is highly interactiveand encourages exploration and experimentation. Pedagogically, the design is based on constructivist and apprenticeship approaches.

Secondly, the environment is designed to illustrate and emphasize important abstractions and concepts of object-oriented programming. Conceptssuch as the class/object relationship, methods, parameters, and object interaction are conveyed through visualizations and guided interactions. Thegoal is to build and support a mental model that correctly represents modern object-oriented programming systems."

Questions & Answers

A golfer on a fairway is 70 m away from the green, which sits below the level of the fairway by 20 m. If the golfer hits the ball at an angle of 40° with an initial speed of 20 m/s, how close to the green does she come?
Aislinn Reply
cm
tijani
what is titration
John Reply
what is physics
Siyaka Reply
A mouse of mass 200 g falls 100 m down a vertical mine shaft and lands at the bottom with a speed of 8.0 m/s. During its fall, how much work is done on the mouse by air resistance
Jude Reply
Can you compute that for me. Ty
Jude
what is the dimension formula of energy?
David Reply
what is viscosity?
David
what is inorganic
emma Reply
what is chemistry
Youesf Reply
what is inorganic
emma
Chemistry is a branch of science that deals with the study of matter,it composition,it structure and the changes it undergoes
Adjei
please, I'm a physics student and I need help in physics
Adjanou
chemistry could also be understood like the sexual attraction/repulsion of the male and female elements. the reaction varies depending on the energy differences of each given gender. + masculine -female.
Pedro
A ball is thrown straight up.it passes a 2.0m high window 7.50 m off the ground on it path up and takes 1.30 s to go past the window.what was the ball initial velocity
Krampah Reply
2. A sled plus passenger with total mass 50 kg is pulled 20 m across the snow (0.20) at constant velocity by a force directed 25° above the horizontal. Calculate (a) the work of the applied force, (b) the work of friction, and (c) the total work.
Sahid Reply
you have been hired as an espert witness in a court case involving an automobile accident. the accident involved car A of mass 1500kg which crashed into stationary car B of mass 1100kg. the driver of car A applied his brakes 15 m before he skidded and crashed into car B. after the collision, car A s
Samuel Reply
can someone explain to me, an ignorant high school student, why the trend of the graph doesn't follow the fact that the higher frequency a sound wave is, the more power it is, hence, making me think the phons output would follow this general trend?
Joseph Reply
Nevermind i just realied that the graph is the phons output for a person with normal hearing and not just the phons output of the sound waves power, I should read the entire thing next time
Joseph
Follow up question, does anyone know where I can find a graph that accuretly depicts the actual relative "power" output of sound over its frequency instead of just humans hearing
Joseph
"Generation of electrical energy from sound energy | IEEE Conference Publication | IEEE Xplore" ***ieeexplore.ieee.org/document/7150687?reload=true
Ryan
what's motion
Maurice Reply
what are the types of wave
Maurice
answer
Magreth
progressive wave
Magreth
hello friend how are you
Muhammad Reply
fine, how about you?
Mohammed
hi
Mujahid
A string is 3.00 m long with a mass of 5.00 g. The string is held taut with a tension of 500.00 N applied to the string. A pulse is sent down the string. How long does it take the pulse to travel the 3.00 m of the string?
yasuo Reply
Who can show me the full solution in this problem?
Reofrir Reply
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Source:  OpenStax, Object-oriented programming (oop) with java. OpenStax CNX. Jun 29, 2016 Download for free at https://legacy.cnx.org/content/col11441/1.201
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