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True or False? The program shown in Listing 1 compares the search speed of the ArrayList class and the TreeSet class.

Answer 9

Question 10

True or False? The program shown in Listing 1 instantiates a TreeSet object and populates it with approximately 10,000,000 elements.

Answer 10

Question 11

True or False? Because the add method of a Set object rejects duplicate elements, there may be fewer than 2,000,000 elements in the TreeSet object in Listing 1 after it is populated, depending on how many of the random values are duplicates.

Answer 11

Question 12

True or False? One of the capabilities of the Collection Framework is to create a new Collection object and populate it with the contents of an existing Collection object of a different (or the same) actual type.

Answer 12

Question 13

True or False? The code in Listing 1 instantiates an ArrayList object and populates it with exactly 2,000,000 random values that are different from the random valuescontained in the TreeSet object.

Answer 13

Question 14

True or False? The ArrayList object in Listing 1 may contain duplicate values.

Answer 14

Question 15

True or False? Listing 1 calls the get method on the ArrayList object. The ArrayList class implements the List interface. The get method of the List interface is inherited from the Collection interface.

Answer 15

Question 16

True or False? In general, the time required for the contains method to find a value in a TreeSet object is less than the time required for the contains method to find a value in an ArrayList object.

Answer 16

Question 17

True or False? The very fast searching speed of a TreeSet object results from the implementation of the Set interface.

Answer 17

Question 18

True or False? Polymorphic behavior means that the actual method that is executed on a Collection object is the appropriate method for that type of object regardless of the actual type (class) of the reference to the object.

Answer 18

Question 19

True or False? Some of the implementations of the Java Collections Framework maintain their elements in a random order, and other implementations maintaintheir elements in a sorted order. The sorting algorithms used to maintain the order of the collections in the Collections Framework are exposed in the sameway that the search algorithm is exposed (via the contains method).

Answer 19

Question 20

True or False? The interfaces in the Collections Framework make it possible to manipulate the contents of collections in a manner that is independent of the underlying implementation of each collection.

Answer 20

Listings

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Answers

Answer 20

True.

Back to Question 20

Answer 19

False. The sorting algorithms used to maintain the order of the collections in the Collections Framework are not exposed in the way that the searchalgorithm is exposed (via the contains method). Rather, the sorting algorithms are implicit in those implementations that need them, and are absent from thoseimplementations that don't need them.

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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