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Answer 8

Question 9

True or False? In Listing 1 , a method named add is called to populate the TreeSet collection and the ArrayList collection with the same values in the same order.

Answer 9

Question 10

True or False? Given that in Listing 1 , a method named add is called to populate the TreeSet collection and the ArrayList collection with the same values in the same order, the two collections end up containing the same values

Answer 10

Question 11

True or False? Given that in Listing 1 , the TreeSet object filters out duplicate values, the TreeSet object and the ArrayList object end up containing all of the other values in the same order.

Answer 11

Question 12

True or False? In Listing 1 , the fillIt method receives an incoming parameter that is a reference to a collection object. The fillIt method calls the add method on the incoming reference several times in succession to add elements to the collection, being careful to satisfy thespecial requirements of the type of collection object.

Answer 12

Question 13

True or False? In Listing 1 , the fillIt method calls the same method name ( add ) on each of the collection objects. (They are physically different methods with the same name.) . The behavior of one add method is different from the behavior of the other add method. In both cases, the behavior is appropriate for the underlying data structure. The actual type of the underlyingdata structure isn't known to the fillIt method.

Answer 13

Question 14

True or False? The inheritance structure of the core collection interfaces in the Java Collections Framework is shown below. Indentation is used to indicatethe parent-child relationships among the interfaces.

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

Answer 14

Question 15

True or False? Every class that implements an interface in the tree rooted in Collection is required to support all of the methods (operations) declared in the Collection interface.

Answer 15

Listings

What is the meaning of the following two images?

These images were inserted here simply to insert some space between the questions and the answers to keep them from being visible on the screen at thesame time.

Spacer image of a rabbit and a penguin.

This image was also inserted for the purpose of inserting space between the questions and the answers.

Spacer image of a penguin and some houses.

Answers

Answer 15

False. Every class that implements an interface in the tree rooted in Collection is not required to support all of the methods (operations) declared in the Collection interface.

Rather, some of the methods in the Collection interface are designated as "optional operation" in the documentation.

If a given implementation doesn't support a specific method, it must throw an UnsupportedOperationException . The author of the implementation is responsible for providing documentation that identifies the optional operationsthat the implementation does and does not support.

Back to Question 15

Answer 14

True.

Back to Question 14

Answer 13

True.

Back to Question 13

Answer 12

False. In Listing 1 , the fillIt method receives an incoming parameter that is a reference to a collection object. The fillIt method calls the add method on the incoming reference several times in succession to add elements to the collection, without regard for the actual typeor underlying implementation of the collection object. (As written, the fillIt method has no way of knowing the actual type or underlying implementation of the collection object.)

Back to Question 12

Answer 11

False. By implementing the SortedSet interface, the TreeSet object is required to present its contents to an iterator in ascending natural order. The ArrayList object is not subject to such a contract. Therefore, the TreeSet object presents its contents to the iterator as 1234 (with no duplicate elements) while the ArrayList object presents its contents to the iterator as 44321, which is the same orderthat the values were added to the object.

Back to Question 11

Answer 10

False. The TreeSet class implements the SortedSet interface. SortedSet is a sub interface of Set . One of the characteristics of a Set object is that it doesn't allow duplicate elements. The ArrayList class is not subject to such a contract. Therefore, the ArrayList object ends up containing duplicate copies of the value 4 while the TreeSet object ends up with no duplicates.

Back to Question 10

Answer 9

True.

Back to Question 9

Answer 8

False. Given that both the TreeSet class and the ArrayList class inherit an abstract method named add from the Collection interface, each class is required to define a concrete version of the add method but those two methods are not required to exhibit the same behavior. The behavior of the add method for each class should be appropriate for the type of object instantiatedfrom the class.

Back to Question 8

Answer 7

True.

Back to Question 7

Answer 6

False. Both the TreeSet class and the ArrayList class implement the Collection interface.

Back to Question 6

Answer 5

True.

Back to Question 5

Answer 4

True.

Back to Question 4

Answer 3

False. There is more than one way to implement a list. Two common ways involve arrays and linked structures.

Back to Question 3

Answer 2

True.

Back to Question 2

Answer 1

1234 44321

Back to Question 1

Miscellaneous

This section contains a variety of miscellaneous information.

Housekeeping material
  • Module name: Java4050r: Review
  • File: Java4050r.htm
  • Published: 11/30/13
Disclaimers:

Financial : Although the Connexions site makes it possible for you to download aPDF file for this module at no charge, and also makes it possible for you to purchase a pre-printed version of the PDF file, youshould be aware that some of the HTML elements in this module may not translate well into PDF.

I also want you to know that, I receive no financial compensation from the Connexions website even if you purchase the PDF version ofthe module.

In the past, unknown individuals have copied my modules from cnx.org, converted them to Kindle books, and placed them for sale onAmazon.com showing me as the author. I neither receive compensation for those sales nor do I know who does receive compensation. If youpurchase such a book, please be aware that it is a copy of a module that is freely available on cnx.org and that it was made andpublished without my prior knowledge.

Affiliation : I am a professor of Computer Information Technology at Austin Community College in Austin, TX.

-end-

Questions & Answers

where we get a research paper on Nano chemistry....?
Maira Reply
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
Google
da
no nanotechnology is also a part of physics and maths it requires angle formulas and some pressure regarding concepts
Bhagvanji
Preparation and Applications of Nanomaterial for Drug Delivery
Hafiz Reply
revolt
da
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
Nasa has use it in the 60's, copper as water purification in the moon travel.
Alexandre
nanocopper obvius
Alexandre
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
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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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