<< Chapter < Page Chapter >> Page >
The purpose of this module is to explain some of the details surrounding the use of a Java collection for creating data structures. The module also discusses the interfaces and some of the concrete implementations in the Java Collections Framework.

Revised: Tue Apr 05 14:25:01 CDT 2016

This page is included in the following Books:

Table of contents


This module is one of a series of modules designed to teach you about Object-Oriented Programming (OOP) in general and the Java Collectionsframework in particular.

The purpose of this module is to explain some of the details surrounding the use of a Java collection for creating data structures. The module also discusses the interfaces and some of the concrete implementations in the Java Collections Framework.

In addition to studying these modules, I strongly recommend that you study the Collections Trail in Oracle's Java Tutorials . The modules in this collection are intended to supplement and not to replace those tutorials.


Collection is not only the name of a Java interface, it is also the term given to an object that groups multiple elements into a single unit.

I will discuss the advantages of passing collections between methods as type Collection .

I will summarize the core interfaces in the Collections Framework and show you how they are related.

I will very briefly discuss some of the concrete implementations of the interfaces that are provided by the framework.

And finally, I will introduce you to the three kinds of things that are part of a collections framework.


The code in this series of modules is written with no thought given to Generics . As a result, if you copy and compile the code, you will probably get warnings about unchecked or unsafe operations .

While you will ultimately need to understand how to use Generics, that is avery complex topic. An understanding of Generics is beyond the scope of this course. Therefore, for purposes of this course, you can simply ignore thosewarnings.


What is a collection?

Just to see if you are awake today, let's start with a little quiz.

What is a collection insofar as Java programming is concerned?

  • A. Something they gather in plates at church.
  • B. An object that groups multiple elements into a single unit.
  • C. The name of a Java interface.
  • D. None of the above.

If you answered A, you are probably reading an article on the wrong website by mistake. If you answered Both B and C , then you are off to a good start on this module.

Collection is the name of a Java interface. This interface is an integral part of the Java Collections Framework . Collection is one of two top-level interfaces in the framework. The other top-level interfacein the framework is named Map .

Questions & Answers

How we are making nano material?
what is a peer
What is meant by 'nano scale'?
What is STMs full form?
scanning tunneling microscope
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
The nanotechnology is as new science, to scale nanometric
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
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
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
what school?
biomolecules are e building blocks of every organics and inorganic materials.
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
sciencedirect big data base
Introduction about quantum dots in nanotechnology
Praveena Reply
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
how to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
characteristics of micro business
for teaching engĺish at school how nano technology help us
How can I make nanorobot?
Do somebody tell me a best nano engineering book for beginners?
s. Reply
there is no specific books for beginners but there is book called principle of nanotechnology
how can I make nanorobot?
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
what is the actual application of fullerenes nowadays?
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
what is the Synthesis, properties,and applications of carbon nano chemistry
Abhijith Reply
Mostly, they use nano carbon for electronics and for materials to be strengthened.
is Bucky paper clear?
carbon nanotubes has various application in fuel cells membrane, current research on cancer drug,and in electronics MEMS and NEMS etc
Got questions? Join the online conversation and get instant answers!
Jobilize.com Reply

Get the best Algebra and trigonometry course in your pocket!

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
Google Play and the Google Play logo are trademarks of Google Inc.

Notification Switch

Would you like to follow the 'Object-oriented programming (oop) with java' conversation and receive update notifications?