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A very brief introduction to the concepts of object-oriented programming with descriptions of encapsulation, inheritance, and polymorphism. Includes two new custom components that will run in the Flash player plugin.

Table of contents

Preface

General

Note that all references to ActionScript in this lesson arereferences to version 3 or later.

This tutorial lesson is part of a continuing series of lessons dedicated to object-oriented programming (OOP) with ActionScript.

There are several ways to create and launch programs written in the ActionScript programming language. Many of the lessons in this series willuse Adobe Flex as the launch pad for ActionScript programs. An earlier lesson titled The Default Application Container provided information on how to get started programming with Adobe's Flex Builder 3. (See Baldwin's Flex programming website .) You should read that lesson before embarking on the lessons in this series.

One of the complicating factors

One of the complicating factors in using Adobe Flex as the launch pad for ActionScript programs is the difficulty of understanding the relationships thatexist between Flex and ActionScript. I recommend that you study the following lessons on Baldwin's Flex programming website that address that topic:

  • 114 Integrating ActionScript and Flex
  • 116 Defining Custom MXML Components
  • 118 Defining Custom ActionScript Components
  • 120 Creating Online Tests using Custom ActionScript Components

I recommend that you also study all of the other lessons on Baldwin's Flex programming website in parallel with your study of these ActionScript lessons. Eventually youwill probably need to understand both technologies and the relationships that exist between them in order to become a successful ActionScript programmer.

Another complicating factor

Another complicating factor is knowing whether to use ActionScript code or Flex MXML code to achieve a particular objective. In many cases, eitherwill do the job.

Insofar as this series of lessons is concerned, the emphasis will be on ActionScript code even in those cases where Flex MXML code may be a suitablealternative.

Viewing tip

I recommend that you open another copy of this document in a separate browser window and use the following links to easily find and view the figures andlistings while you are reading about them.

Figures

  • Figure 1 . Guideline for OOP.
  • Figure 2 . Two objects of the class named MyClass.
  • Figure 3 . An object ofthe class named NumericTextAreaA.

Listings

  • Listing 1 . Class file named MyClass.as.
  • Listing 2 . Flex file named SimpleClass01.mxml.
  • Listing 3 . The filenamed NumericTextArea01.mxml.
  • Listing 4 . The classdefinition for NumericTextAreaA.

Questions & Answers

what are the products of Nano chemistry?
Maira Reply
There are lots of products of nano chemistry... Like nano coatings.....carbon fiber.. And lots of others..
learn
Even nanotechnology is pretty much all about chemistry... Its the chemistry on quantum or atomic level
learn
Preparation and Applications of Nanomaterial for Drug Delivery
Hafiz Reply
Application of nanotechnology in medicine
what is variations in raman spectra for nanomaterials
Jyoti Reply
I only see partial conversation and what's the question here!
Crow Reply
what about nanotechnology for water purification
RAW Reply
please someone correct me if I'm wrong but I think one can use nanoparticles, specially silver nanoparticles for water treatment.
Damian
yes that's correct
Professor
I think
Professor
what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
Rafiq
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
Damian
How we are making nano material?
LITNING Reply
what is a peer
LITNING Reply
What is meant by 'nano scale'?
LITNING Reply
What is STMs full form?
LITNING
scanning tunneling microscope
Sahil
how nano science is used for hydrophobicity
Santosh
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
Rafiq
what is differents between GO and RGO?
Mahi
what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.? How this robot is carried to required site of body cell.? what will be the carrier material and how can be detected that correct delivery of drug is done Rafiq
Rafiq
if virus is killing to make ARTIFICIAL DNA OF GRAPHENE FOR KILLED THE VIRUS .THIS IS OUR ASSUMPTION
Anam
analytical skills graphene is prepared to kill any type viruses .
Anam
Any one who tell me about Preparation and application of Nanomaterial for drug Delivery
Hafiz
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
Bob
The nanotechnology is as new science, to scale nanometric
brayan
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Damian
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
Renato
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
?
Kyle
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
Adin
why?
Adin
what school?
Kyle
biomolecules are e building blocks of every organics and inorganic materials.
Joe
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
research.net
kanaga
sciencedirect big data base
Ernesto
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Source:  OpenStax, Object-oriented programming (oop) with actionscript. OpenStax CNX. Jun 04, 2010 Download for free at http://cnx.org/content/col11202/1.19
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