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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

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
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
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 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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