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This module contains review questions and answers keyed to the module titled Java3004: Processing Algorithms, Inversion, and PictureExplorer Objects.

Revised: Sat Apr 02 15:35:59 CDT 2016

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Table of contents

Preface

This module contains review questions and answers keyed to the module titled Image Java3004: Processing Algorithms, Image Inversion, and PictureExplorer Objects .

The questions and the answers 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? A color value is inverted by subtracting the value from 256.

Answer 1

Question 2

True or False? The code in Listing 1 instantiates a new object of the PictureExplorer class.

Listing 1 . Question 2.
class Prob02Runner{ private Picture pic = new Picture("Prob02.jpg");public Prob02Runner(){//constructor System.out.println("Dick Baldwin");}//end constructor //----------------------------------------------------////Accessor method public Picture getPicture(){return pic;}

Answer 2

Question 3

True or False? The code in Listing 2 causes an image to be displayed in the format shown in Figure 1 .

Listing 2 . Question 3.
public void run(){ pic.addMessage("Dick Baldwin",10,20);pic.explore();

Figure 1 - Question 3.

Image of a penguin in the snow in front of some houses.

Answer 3

Question 4

True or False? The availability of the explore method and the PictureExplorer class is very important in at least two respects:

  • The explore method makes it easy to display copies of an image at various stages during the processing of the image. Once the PictureExplorer object is created and displayed, it won't be effected by subsequent changes to the image.
  • The availability of a PictureExplorer object makes it easy to manually analyze the colors of the individual pixels in an imageencapsulated in that object.

Answer 4

Question 5

True or False? The algorithm shown in Listing 3 can be used to cause the image shown in Figure 2 to be transformed into the image shown in Figure 3 .

Listing 3 . Question 5.
Pixel[] pixelArray = pic.getPixels();for(Pixel pixel:pixelArray ){ pixel.setRed(255 - pixel.getRed());pixel.setGreen(255 - pixel.getGreen()); pixel.setBlue(0);}//end for loop

Figure 3 - Question 5.

Image of a penguni in front of some houses with unnatural colors.

Answer 5

Question 6

True or False? An object of Ericson's Pixel class encapsulates an individual pixel from an image.

Answer 6

Question 7

True or False? The Pixel class defines a single method that can be called to invert the color of the pixel.

Answer 7

Question 8

True or False? The getPixels method belonging to a Picture object returns references to all of the Pixel objects encapsulated in the picture in a two-dimensional array where the dimensions ofthe array represent the horizontal and vertical coordinates of each pixel.

Answer 8

Question 9

True or False? The for loop shown in Listing 3 is of a type that is often referred to as a for-each loop.

Questions & Answers

anyone know any internet site where one can find nanotechnology papers?
Damian Reply
research.net
kanaga
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
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
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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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