# 3.25 Java3024r review

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This module contains review questions and answers keyed to the module titled Java3024: Mirroring Images.

Revised: Mon Apr 04 09:53:24 CDT 2016

This page is included in the following Books:

## Preface

This module contains review questions and answers keyed to the module titled Java3024: Mirroring Images .

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.

## Question 1.

Given the input image shown in Figure 1 , which of the following output images is produced by the code in Listing 1 ?

A. Figure 2

B. Figure 3

Listing 1 . Question 1.
```/*File Java3024ra Copyright 2013 R.G.Baldwin *********************************************************/import java.awt.Graphics2D; import java.awt.geom.AffineTransform;import java.awt.geom.Rectangle2D; import java.awt.Graphics;public class Java3024ra{ public static void main(String[]args){ new Java3024raRunner().run();}//end main method }//end class Java3024ra//======================================================// class Java3024raRunner{public void run(){ Picture pix = new Picture("Prob02a.jpg");pix = rotatePicture(pix,35); pix = mirrorUpperQuads(pix);pix = mirrorHoriz(pix); pix.explore();System.out.println(pix); }//end run//----------------------------------------------------// private Picture rotatePicture(Picture pix,double angle){ AffineTransform rotateTransform =new AffineTransform(); rotateTransform.rotate(Math.toRadians(angle),pix.getWidth()/2, pix.getHeight()/2);Rectangle2D rectangle2D = pix.getTransformEnclosingRect(rotateTransform);int resultWidth = (int)(rectangle2D.getWidth()); int resultHeight = (int)(rectangle2D.getHeight());AffineTransform translateTransform = new AffineTransform();translateTransform.translate( (resultWidth - pix.getWidth())/2,(resultHeight - pix.getHeight())/2); translateTransform.concatenate(rotateTransform);Picture result = new Picture( resultWidth,resultHeight);Graphics2D g2 = (Graphics2D)result.getGraphics(); g2.drawImage(pix.getImage(),translateTransform,null);return result; }//end rotatePicture//----------------------------------------------------// private Picture mirrorUpperQuads(Picture pix){Pixel leftPixel = null; Pixel rightPixel = null;int midpoint = pix.getWidth()/2; int width = pix.getWidth();for(int row = 0;row<pix.getHeight()/2;row++){ for(int col = 0;col<midpoint;col++){ leftPixel = pix.getPixel(col,row);rightPixel = pix.getPixel(width-1-col,row); rightPixel.setColor(leftPixel.getColor());}//end inner loop }//end outer loopreturn pix; }//end mirrorUpperQuads//----------------------------------------------------// private Picture mirrorHoriz(Picture pix){Pixel topPixel = null; Pixel bottomPixel = null;int midpoint = pix.getHeight()/2;int height = pix.getHeight(); for(int col = 0;col<pix.getWidth();col++){ for(int row = 0;row<midpoint;row++){ topPixel = pix.getPixel(col,row);bottomPixel = pix.getPixel(col,height-1-row); bottomPixel.setColor(topPixel.getColor());}//end inner loop }//end outer loopreturn pix; }//end mirrorHoriz//----------------------------------------------------// }//end class Java3024raRunner```

Figure 1 - Prob02a.jpg.

Figure 2 - Possible output image.

Figure 3 - Possible output image.

## 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.

This image was also inserted for the purpose of inserting space between the questions and the answers.

## Answer 1

The code in Listing 1 produces the output image shown in Figure 2 .

## Miscellaneous

This section contains a variety of miscellaneous information.

Housekeeping material
• Module name: Java3024r Review
• File: Java3024r.htm
• Published: 02/18/13
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

find the 15th term of the geometric sequince whose first is 18 and last term of 387
Jerwin Reply
I know this work
salma
The given of f(x=x-2. then what is the value of this f(3) 5f(x+1)
virgelyn Reply
hmm well what is the answer
Abhi
how do they get the third part x = (32)5/4
kinnecy Reply
can someone help me with some logarithmic and exponential equations.
Jeffrey Reply
sure. what is your question?
ninjadapaul
20/(×-6^2)
Salomon
okay, so you have 6 raised to the power of 2. what is that part of your answer
ninjadapaul
I don't understand what the A with approx sign and the boxed x mean
ninjadapaul
it think it's written 20/(X-6)^2 so it's 20 divided by X-6 squared
Salomon
I'm not sure why it wrote it the other way
Salomon
I got X =-6
Salomon
ok. so take the square root of both sides, now you have plus or minus the square root of 20= x-6
ninjadapaul
oops. ignore that.
ninjadapaul
so you not have an equal sign anywhere in the original equation?
ninjadapaul
hmm
Abhi
is it a question of log
Abhi
🤔.
Abhi
I rally confuse this number And equations too I need exactly help
salma
But this is not salma it's Faiza live in lousvile Ky I garbage this so I am going collage with JCTC that the of the collage thank you my friends
salma
Commplementary angles
Idrissa Reply
hello
Sherica
im all ears I need to learn
Sherica
right! what he said ⤴⤴⤴
Tamia
hii
Uday
hi
salma
what is a good calculator for all algebra; would a Casio fx 260 work with all algebra equations? please name the cheapest, thanks.
Kevin Reply
a perfect square v²+2v+_
Dearan Reply
kkk nice
Abdirahman Reply
algebra 2 Inequalities:If equation 2 = 0 it is an open set?
Kim Reply
or infinite solutions?
Kim
The answer is neither. The function, 2 = 0 cannot exist. Hence, the function is undefined.
Al
y=10×
Embra Reply
if |A| not equal to 0 and order of A is n prove that adj (adj A = |A|
Nancy Reply
rolling four fair dice and getting an even number an all four dice
ramon Reply
Kristine 2*2*2=8
Bridget Reply
Differences Between Laspeyres and Paasche Indices
Emedobi Reply
No. 7x -4y is simplified from 4x + (3y + 3x) -7y
Mary Reply
how do you translate this in Algebraic Expressions
linda Reply
Need to simplify the expresin. 3/7 (x+y)-1/7 (x-1)=
Crystal Reply
. After 3 months on a diet, Lisa had lost 12% of her original weight. She lost 21 pounds. What was Lisa's original weight?
Chris 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
what is nano technology
Sravani Reply
what is system testing?
AMJAD
preparation of nanomaterial
Victor Reply
Yes, Nanotechnology has a very fast field of applications and their is always something new to do with it...
Himanshu Reply
good afternoon madam
AMJAD
what is system testing
AMJAD
what is the application of nanotechnology?
Stotaw
In this morden time nanotechnology used in many field . 1-Electronics-manufacturad IC ,RAM,MRAM,solar panel etc 2-Helth and Medical-Nanomedicine,Drug Dilivery for cancer treatment etc 3- Atomobile -MEMS, Coating on car etc. and may other field for details you can check at Google
Azam
anybody can imagine what will be happen after 100 years from now in nano tech world
Prasenjit
after 100 year this will be not nanotechnology maybe this technology name will be change . maybe aftet 100 year . we work on electron lable practically about its properties and behaviour by the different instruments
Azam
name doesn't matter , whatever it will be change... I'm taking about effect on circumstances of the microscopic world
Prasenjit
how hard could it be to apply nanotechnology against viral infections such HIV or Ebola?
Damian
silver nanoparticles could handle the job?
Damian
not now but maybe in future only AgNP maybe any other nanomaterials
Azam
Hello
Uday
I'm interested in Nanotube
Uday
this technology will not going on for the long time , so I'm thinking about femtotechnology 10^-15
Prasenjit
can nanotechnology change the direction of the face of the world
Prasenjit Reply
At high concentrations (>0.01 M), the relation between absorptivity coefficient and absorbance is no longer linear. This is due to the electrostatic interactions between the quantum dots in close proximity. If the concentration of the solution is high, another effect that is seen is the scattering of light from the large number of quantum dots. This assumption only works at low concentrations of the analyte. Presence of stray light.
Ali Reply
the Beer law works very well for dilute solutions but fails for very high concentrations. why?
bamidele Reply
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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