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This module contains review questions and answers keyed to the module titled Java4060: Duplicate Elements, Ordered Collections, Sorted Collections, and Interface Specialization.

Revised: Wed Apr 06 12:34:49 CDT 2016

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Table of contents

Preface

This module is one in a collection of modules on Java Collections designed for teaching ITSE2321 - Object-Oriented Programming (Java) at Austin Community College in Austin, TX.

This module contains review questions and answers keyed to the module titled Java4060: Duplicate Elements, Ordered Collections, Sorted Collections, and Interface Specialization .

Once you study that module, you should be able to answer the review questions in this module.

The questions and the answers in this module are connected by hyperlinks to make it easy for you to navigate from the question to the answer and back again.

Questions

Question 1 .

True or False? The Java Collections Framework defines eight core interfaces, in two distinct trees.

Answer 1

Question 2

True or False? All eight of the core interfaces are rooted in the interface named Collection .

Answer 2

Question 3

True or False? A Set object can contain duplicate elements, but a List object cannot contain duplicate elements.

Answer 3

Question 4

True or False? The TreeSet class is a direct implementation of the Collection interface. (See the Java documentation.)

Answer 4

Question 5

True or False? The interface hierarchy for the Java Collections Framework is shown below with indentation used to show a parent-child relationship:

  • Collection
    • Set
      • SortedSet
    • List
    • Queue
    • Deque
  • Map
    • SortedMap

Answer 5

Question 6

True or False? The ArrayList class is a direct implementation of the Collection interface. (See the Java documentation.)

Answer 6

Question 7

True or False? In Java, a Set is a collection that contains no duplicate elements. The Set interface models the mathematical set abstraction.

Answer 7

Question 8

True or False? In Java, a List is an ordered collection (also known as a sequence) . The user of the List interface has precise control over where in the list each element is inserted. The user canaccess elements by their integer index (position in the list) , and search for elements in the list.

Answer 8

Question 9

True or False? The term ordered is a synonym for sorted .

Answer 9

Question 10

True or False? An ordered collection is one in which the position of each element is determined by its value relative to the values of itspredecessors and successors.

Answer 10

Question 11

True or False? A sorted collection is one in which the position of each element is determined by its value relative to the values of itspredecessors and successors.

Answer 11

Question 12

True or False? Ascending sort order is always required for a Java collection.

Answer 12

Question 13

True or False? Ascending sort order is always required for a Java collection that implements the SortedSet interface.

Questions & Answers

so some one know about replacing silicon atom with phosphorous in semiconductors device?
s. Reply
how to fabricate graphene ink ?
SUYASH Reply
for screen printed electrodes ?
SUYASH
What is lattice structure?
s. Reply
of graphene you mean?
Ebrahim
or in general
Ebrahim
in general
s.
Graphene has a hexagonal structure
tahir
On having this app for quite a bit time, Haven't realised there's a chat room in it.
Cied
what is biological synthesis of nanoparticles
Sanket Reply
what's the easiest and fastest way to the synthesize AgNP?
Damian Reply
China
Cied
types of nano material
abeetha Reply
I start with an easy one. carbon nanotubes woven into a long filament like a string
Porter
many many of nanotubes
Porter
what is the k.e before it land
Yasmin
what is the function of carbon nanotubes?
Cesar
I'm interested in nanotube
Uday
what is nanomaterials​ and their applications of sensors.
Ramkumar Reply
what is nano technology
Sravani Reply
what is system testing?
AMJAD
preparation of nanomaterial
Victor Reply
Yes, Nanotechnology has a very fast field of applications and their is always something new to do with it...
Himanshu Reply
good afternoon madam
AMJAD
what is system testing
AMJAD
what is the application of nanotechnology?
Stotaw
In this morden time nanotechnology used in many field . 1-Electronics-manufacturad IC ,RAM,MRAM,solar panel etc 2-Helth and Medical-Nanomedicine,Drug Dilivery for cancer treatment etc 3- Atomobile -MEMS, Coating on car etc. and may other field for details you can check at Google
Azam
anybody can imagine what will be happen after 100 years from now in nano tech world
Prasenjit
after 100 year this will be not nanotechnology maybe this technology name will be change . maybe aftet 100 year . we work on electron lable practically about its properties and behaviour by the different instruments
Azam
name doesn't matter , whatever it will be change... I'm taking about effect on circumstances of the microscopic world
Prasenjit
how hard could it be to apply nanotechnology against viral infections such HIV or Ebola?
Damian
silver nanoparticles could handle the job?
Damian
not now but maybe in future only AgNP maybe any other nanomaterials
Azam
Hello
Uday
I'm interested in Nanotube
Uday
this technology will not going on for the long time , so I'm thinking about femtotechnology 10^-15
Prasenjit
can nanotechnology change the direction of the face of the world
Prasenjit Reply
At high concentrations (>0.01 M), the relation between absorptivity coefficient and absorbance is no longer linear. This is due to the electrostatic interactions between the quantum dots in close proximity. If the concentration of the solution is high, another effect that is seen is the scattering of light from the large number of quantum dots. This assumption only works at low concentrations of the analyte. Presence of stray light.
Ali Reply
the Beer law works very well for dilute solutions but fails for very high concentrations. why?
bamidele Reply
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit 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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