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This module contains review questions and answers keyed to the module titled Java3014: Cropping, Flipping, and Combining Pictures.

Revised: Sun Apr 03 12:08:03 CDT 2016

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Table of contents

Preface

This module contains review questions and answers keyed to the module titled Java3014: Cropping, Flipping, and Combining Pictures .

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? The code in Listing 1 combined with the images in Figure 1 and Figure 2 produces the output shown in Figure 3 .

Listing 1 . Question 1 .
/*File Java3014ra Copyright 2013 R.G.Baldwin Revised 02/15/13*********************************************************/ import java.awt.Color;public class Java3014ra{ public static void main(String[]args){ Picture[]pictures = new Java3014raRunner().run(); }//end main method}//end class Java3014ra //======================================================//class Java3014raRunner{ public Picture[]run(){ Picture picA = new Picture("Prob02a.jpg");Picture picB = new Picture("Prob02b.jpg"); Picture picC = cropAndFlip(picA,4,5,80,105);copyPictureWithCrop(picA,picB,130,10,4,5,77,101); copyPictureWithCrop(picC,picB,130,120,0,0,77,101);picB.explore(); Picture[]output = {picA,picB,picC}; return output;}//end run //----------------------------------------------------////Crops a picture to the specified coordinate values and // flips it around a vertical line at its center.private Picture cropAndFlip(Picture pic,int x1,int y1, int x2,int y2){Picture output = new Picture(x2-x1+1,y2-y1+1); int width = output.getWidth();Pixel pixel = null; Color color = null;for(int col = x1;col<(x2+1);col++){ for(int row = y1;row<(y2+1);row++){ color = pic.getPixel(col,row).getColor();pixel = output.getPixel(width-col+x1-1,row-y1); pixel.setColor(color);}//end inner loop }//end outer loopreturn output; }//end crop and flip//----------------------------------------------------// //Copies part of the source picture into the destination// picture with an offset on both axes after first // confirming that the part will fit. Does nothing if it// won't fit. private void copyPictureWithCrop(Picture source,Picture dest,int xOff, int yOff,int xCoor, int yCoor,int width, int height){//Confirm that source will fit in destination if(((width+xOff)<= dest.getWidth())&&((height+yOff)<= dest.getHeight())){ Pixel pixel = null;Color color = null; for(int col = 0;col<width;col++){ for(int row = 0;row<height;row++){ color = source.getPixel(col + xCoor,row + yCoor).getColor(); pixel = dest.getPixel(col+xOff,row+yOff); pixel.setColor(color);}//end inner loop }//end outer loop}//end if }//end copyPictureWithCrop method}//end class Java3014raRunner

Figure 1 - Prob02a.jpg.

This is an image of a butterfly.

Figure 2 - Prob02b.jpg.

This is an image of a beach scene.

Figure 3 - Possible output image.

Possible output image from the program shown in Listing 1.

Answer 1

Question 2

True or False? The call to the run method in Listing 2 returns a reference to an object of the class Picture .

Listing 2 . Question 2.
Picture[] pictures = new Java3014raRunner().run();

Answer 2

Figures

Listings

What is the meaning of the following two images?

This image was 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.

The image is also an example of the kinds of things that we do in my course titled ITSE 2321, Object-Oriented Programming.

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 in the snow in front of some houses.

Answers

Answer 2

False. The call to the run method in Listing 2 returns a reference to an array object whose elements may or may not containreferences to objects of the class Picture (or some subclass of the class Picture ) . However, since array objects in Java may have a length of 0, without seeing the source code for the run method, it is impossible to know what is contained in the array object.

Back to Question 2

Answer 1

False. The code in Listing 1 combined with the images in Figure 1 and Figure 2 produces the output shown in Figure 4 .

Figure 4 - Answer 1.

Actual output image from code in Listing 1.

Back to Question 1

Miscellaneous

This section contains a variety of miscellaneous information.

Housekeeping material
  • Module name: Java3014r Review
  • File: Java3014r.htm
  • Published: 02/15/13
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

what is microbiologist
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Muhammad
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What is microbiology
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studies of microbes
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How bacteria create energy to survive?
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Bacteria doesn't produce energy they are dependent upon their substrate in case of lack of nutrients they are able to make spores which helps them to sustain in harsh environments
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But not all bacteria make spores, l mean Eukaryotic cells have Mitochondria which acts as powerhouse for them, since bacteria don't have it, what is the substitution for it?
Muhamad
they make spores
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the significance of food webs for disease transmission
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food webs brings about an infection as an individual depends on number of diseased foods or carriers dully.
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Assimilatory nitrate reduction is a process that occurs in some microorganisms, such as bacteria and archaea, in which nitrate (NO3-) is reduced to nitrite (NO2-), and then further reduced to ammonia (NH3).
Elkana
This process is called assimilatory nitrate reduction because the nitrogen that is produced is incorporated in the cells of microorganisms where it can be used in the synthesis of amino acids and other nitrogen products
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Examples of thermophilic organisms
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Give Examples of thermophilic organisms
Shu
advantages of normal Flora to the host
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Prevent foreign microbes to the host
Abubakar
they provide healthier benefits to their hosts
ayesha
They are friends to host only when Host immune system is strong and become enemies when the host immune system is weakened . very bad relationship!
Mark
what is cell
faisal Reply
cell is the smallest unit of life
Fauziya
cell is the smallest unit of life
Akanni
ok
Innocent
cell is the structural and functional unit of life
Hasan
is the fundamental units of Life
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what are emergency diseases
Micheal Reply
There are nothing like emergency disease but there are some common medical emergency which can occur simultaneously like Bleeding,heart attack,Breathing difficulties,severe pain heart stock.Hope you will get my point .Have a nice day ❣️
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Many sites of the body have it Skin Nasal cavity Oral cavity Gastro intestinal tract
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skin
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part of a tissue or an organ being wounded or bruised.
Wilfred
what term is used to name and classify microorganisms?
Micheal Reply
Binomial nomenclature
adeolu
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john Reply
Microbiology is the scientific study of microorganisms
Ibra
the microorganisms in a particular environment (including the body or a part of the body).
Ibra
describe the bacterial cell
Akello
The biggest populations of microbes reside in the gut.other popular habitats include the skin genitals.The microbial cells and their genetic material ,the microbiome ,live with human from birth .
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can agriculture be integrated into biology
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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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