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Baldwin shows you that all concrete implementations in the Collection hierarchy implement a sub-interface of the Collection interface. A Set object cannot contain duplicate elements, but a List object can contain duplicate elements. Ordered collections are not the same as sorted collections. Specialized stipulations are placed on interfaces as you progress down the interface inheritance hierarchy of the Java Collections Framework.

Revised: Wed Apr 06 09:47:48 CDT 2016

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Table of contents

Preface

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.

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.

Preview

You learned in earlier modules that the Java Collections Framework defines eight core interfaces, in two distinct trees.One of the trees, which consists of six interfaces, is rooted in the interface named Collection . The other tree, which consists of two interfaces, isrooted in the interface named Map .

You learned the names and the inheritance structure of those interfaces. You also learned about theirpurpose. You saw how the interfaces declare polymorphic methods that apply to implementations of the interfaces, and you learned about the optional methods ofthe Collection interface and the Map interface.

In this module you will learn that all of the implementations of the interfaces on the Collection side of the Java Collections Framework (the Collection hierarchy) implement one of the sub-interfaces of the Collection interface. (A similar discussion regarding the Map side of the Java Collections framework will be deferred until a future module.)

You will learn that a Set object cannot contain duplicate elements, but a List object can contain duplicate elements.

You will learn about the difference between ordered collections and sorted collections. You will also learn about ascending order and the natural ordering of objects.

In addition, you will learn how more specialized stipulations are placed on interfaces as you progress downthe interface inheritance hierarchy of the Java Collections Framework.

Generics

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 .

Questions & Answers

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
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
Introduction about quantum dots in nanotechnology
Praveena Reply
hi
Loga
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
Bharti
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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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