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This module contains review questions and answers keyed to the module titled Java3026: GradientPaint and other Java2D Classes.

Revised: Mon Apr 04 10:22:57 CDT 2016

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Table of contents

Preface

This module contains review questions and answers keyed to the module titled Java3026: GradientPaint and other Java2D Classes .

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 .

Which of the following output images is produced by the program shown in Listing 1 ?

A. Figure 1

B. Figure 2

Listing 1 . Question 1 .
/*File Java3026ra Copyright 2013 R.G.Baldwin *********************************************************/import java.awt.geom.Line2D; import java.awt.geom.Ellipse2D;import java.awt.Color; import java.awt.Graphics;import java.awt.Graphics2D; import java.awt.GradientPaint;public class Java3026ra{ public static void main(String[]args){ new Java3026raRunner().run();}//end main method }//end class Java3026ra//======================================================// class Java3026raRunner{public void run(){ Picture pic = new Picture(300,300);pic.setAllPixelsToAColor(Color.RED); process(pic);pic.explore(); }//end run//----------------------------------------------------// private void process(Picture pic){Graphics2D g2 = (Graphics2D)(pic.getGraphics()); int width = pic.getWidth();int height = pic.getHeight(); g2.translate(width/2,height/2);g2.setColor(Color.BLACK); g2.draw(new Line2D.Double(-width/2,0.0,width/2,0.0));g2.draw(new Line2D.Double(0.0,-width/2,0.0,height/2)); Ellipse2D.Double circle1 =new Ellipse2D.Double(-128,-128,128,128); g2.setPaint(new GradientPaint(-64,-64,Color.BLUE,-32,-32,Color.GREEN,true)); g2.fill(circle1);g2.draw(circle1); Ellipse2D.Double circle2 =new Ellipse2D.Double(0.0,-128,128,128); g2.fill(circle2);g2.draw(circle2); Ellipse2D.Double circle3 =new Ellipse2D.Double(-128,0.0,128,128); g2.fill(circle3);g2.draw(circle3); Ellipse2D.Double circle4 =new Ellipse2D.Double(0,0,128,128); g2.fill(circle4);g2.draw(circle4); }//end process}//end class Java3026raRunner

Figure 1 - Possible output image.

Possible output image from the program in Listing 1.

Figure 2 - Possible output image.

Possible output image from the program in Listing 1.

Answer 1

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 1

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

Back to Question 1

Miscellaneous

This section contains a variety of miscellaneous information.

Housekeeping material
  • Module name: Java3026r Review
  • File: Java3026r.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

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Derrick Reply
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chukwu Reply
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Gloria Reply
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Alex Reply
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layla Reply
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RAM
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Jean
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Ibrahim
The Law of Diminishing (Marginal) Returns simply states that at some point in time a business/operation/etc.'s increased productivity will begin to decline.
The
For example, if a small pizza shop currently has 3 workers in the kitchen at any given time,and hiring 1 more worker will increase productivity, at some number of workers hired will the business see a decrease in productivity because the capital resources that the pizza shop has is not infinite.
The
Five social benefits of building a hospital, in my opinion and depending on where it's built, would be 1) Increased care for neighboring residents, 2) Potential jobs for individuals, 3) May decrease the travel time residents need to endure in order to reach the nearest hospital
The
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5 costs of building a hospital would be 1) Increased noise and waste pollution from service vehicles and hospital visitors, 2) May require large amounts of space, possibly jeopardizing nearby animal habitats, 3) May see an increase in traffic and possibly car accidents from frantic individuals
The
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The
what is meant by inteference with the price mechanism operation?
Mugen
We use a Supply and Demand graph to illustrate at what price level will the market for a certain good or service be at equilibrium. If the price for a good or service is set too high, consumers will be less inclined to buy that product Thus, creating a surplus.
The
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The
equilibrium point.
The
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Wisdom Reply
no
Oigebe
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nondumiso Reply
1.Explicit Collusion: Also termed overt collusion, this occurs when two or more firms in the same industry formally agree to control the market .
Gafar
2.Implicit Collusion: Also termed tacit collusion, this occurs when two or more firms in the same industry informally agree to control the market, often through nothing more than interdependent actions. A prime example of implicit collusion is price leadership .
Gafar
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Panashe
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nondumiso
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Godwin
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Victoria Reply
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Pam Reply
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EWAH Reply
An industry is the production of goods and related services within an economy
Prabhu
an industry is place where goods and services are produced for human consumption....
Usman
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economics is a social sciences that deals with the production distribution and consumption of goods and services produced.its study of behaviour between economic agents
rkesh
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change in demand/change in variable variable may be price, income,
rkesh
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Leah 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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