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Answer 9

Question 10

True or False? A TreeSet object can contain duplicate elements.

Answer 10

Question 11

True or False? A TreeSet object is not a SortedSet.

Answer 11

Question 12

True or False? A TreeSet object is a Collection.

Answer 12

Question 13

True or False? Because an object of the TreeSet class is a Collection , a reference to such an object can be passed to any method that requires an incoming parameter of type Collection . The receiving method can call any method on that reference that is declared in the Collection interface .

Answer 13

Question 14

True or False? The behavior of the fillIt method in Listing 1 is to add elements to the incoming Collection object without regard for the actual type of the object (the class from which the object was instantiated).

Answer 14

Question 15

True or False? In Listing 1 , a reference to an object of type Button (see the Java documentation) could be passed as a parameter to the fillIt method.

Answer 15

Question 16

True or False? In Listing 1 , the fillIt method can call the add method on the incoming object with confidence that the behavior of the add method will be appropriate for the specific type of object involved.

Answer 16

Question 17

True or False? In Listing 1 , when the fillIt method returns, the TreeSet object contains five elements.

Answer 17

Question 18

True or False? In Listing 1 , when the fillIt method returns, the TreeSet object contains four (not five) elements with no duplicates. Each element is a reference to an object of type Integer . Those references are maintained in such a way as to make them accessible in descending order, basedon the int values encapsulated in each of the Integer objects.

Answer 18

Question 19

True or False? The call to the iterator method on any Collection object returns an instance of a class that implements the Iterator interface.

Answer 19

Question 20

True or False? An Iterator object can be used to traverse a Collection object, gaining access to each element in order .

Answer 20

Question 21

True or False? The concept of in order means the same thing for all Collection objects.

Answer 21

Question 22

True or False?

The Iterator interface declares three methods:

  • hasNext()
  • next()
  • remove()

Answer 22

Question 23

True or False? The Iterator object associated with a particular Collection object provides access to the contents of the collection in a very specific way.

Answer 23

Question 24

True or False? The while loop in the Worker class in Listing 1 traverses the collection

  • accessing each of the object's elements in succession, and
  • displaying the value encapsulated in the object referred to by each element.

Answer 24

Question 25

True or False? Listing 1 causes the following text to appear on the screen:

44321

Answer 25

Listings

  • Listing 1 . Used with several different questions.

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.

Questions & Answers

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
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
Bharti
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
Daniel
how to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
Maciej
characteristics of micro business
Abigail
for teaching engĺish at school how nano technology help us
Anassong
Do somebody tell me a best nano engineering book for beginners?
s. Reply
there is no specific books for beginners but there is book called principle of nanotechnology
NANO
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
s.
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
Tarell
what is the actual application of fullerenes nowadays?
Damian
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
Tarell
what is the Synthesis, properties,and applications of carbon nano chemistry
Abhijith Reply
Mostly, they use nano carbon for electronics and for materials to be strengthened.
Virgil
is Bucky paper clear?
CYNTHIA
carbon nanotubes has various application in fuel cells membrane, current research on cancer drug,and in electronics MEMS and NEMS etc
NANO
so some one know about replacing silicon atom with phosphorous in semiconductors device?
s. Reply
Yeah, it is a pain to say the least. You basically have to heat the substarte up to around 1000 degrees celcius then pass phosphene gas over top of it, which is explosive and toxic by the way, under very low pressure.
Harper
Do you know which machine is used to that process?
s.
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
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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