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The Java Collections Framework defines eight core interfaces, in two distinct trees. You will learn about the inheritance structure and the purpose of those interfaces. You will also learn how the interfaces declare polymorphic methods that apply to implementations of the interfaces, and you will learn about the optional methods of the Collection and Map interfaces.

Revised: Wed Apr 06 08:39:26 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 Collections framework in particular.

The Java Collections Framework defines eight core interfaces, in two distinct trees. You will learn about the inheritance structure and the purpose of those interfaces.You will also learn how the interfaces declare polymorphic methods that apply to implementations of the interfaces, and you will learn about the optional methods of the Collection and Map interfaces.

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.

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Listings

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In earlier modules, you learned that at least three things are included in a collections framework:

  • interfaces
  • implementations
  • algorithms

Earlier modules provided a general discussion of the purpose of the interfaces, implementations, and algorithms in the Collections Framework . This module takes that discussion further and illustrates the use of the core collection interfaces.

The Java Collections Framework defines eight core interfaces, in two distinct trees. You will learn the names and the inheritance structure of thoseinterfaces. You will also learn about the purpose of some of those interfaces. You will seehow the interfaces declare polymorphic methods that apply to implementations of the interfaces, and you will learn about the optional methods of the Collection interface.

Questions & Answers

The type of elasticity if demand
Okonkwo Reply
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SHADAB
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Lawal Reply
what is supply
Lawal
the total number of goods present at a particular area at a particular time
Offset
the meaning of elasticity
Affum Reply
how to knw the break even point in business
Edmore Reply
hello
Marshal
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ghulam
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Kakay
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Ornill
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Bakari
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owi
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Marshal
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Offset
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Offset
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sani Reply
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Marshal
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Mona
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Bakari
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Amarachi
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juwel Reply
it shows how many products customers are willing to purchase as the price of those product increase or decrease
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economics as a science
skima Reply
What is utility
Jimoh Reply
utility is a total satisfaction derives from a consumer.
Umar
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Umar
wants satisfying power of a commodity is known as utility........
SHADAB
What is elasity
bohvy
Differentiate between scarcity and choice and explain how they effect perfectly elasiticity of demand and give relevant example with type of goods affected
PATRICK
Utility is ability if of available goods to satisfy human wants
PATRICK
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Umar
equilibrium where price and quantity demanded equals
Bappy
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john
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john
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Bright
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Umar
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Umar
Utility Simply means the satisfaction a consumer derives from consuming a good or service
Hez
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Osuayan
it's a degree of responsiveness to demand due to changes in prices
Ukpen
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Mikateko Reply
scarity is when there is a huge demand for certain goods and services but there's limited resources to actually produce those things
Mario
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Kakay
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juwel
what is distribution
umar Reply
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umar
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Obianyido Reply
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Rasheee Reply
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Richmond Reply
Pls what is scale of preference
Richmond
scale of preference is a arrangement of individual wants in order of priority
Lamina
the arrangement of people want inoder of demand
Ada
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Sonali Reply
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