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This is a wireframe image of a 3d sphere that is used as input to the program.

Figure 2 - Possible output produced by the program in Listing 1 .

This is a possible output image from the program.

Answer 1

Question 2

True or False? The code in Listing 2 instantiates an object of an anonymous class.

Listing 2 . Question 2.
new Java3012raRunner().run();

Answer 2

Question 3

True or False? The code in Listing 2 instantiates an anonymous object..

Answer 3

Question 4

True or False? The statement shown in Listing 3 will return a reference to a Pixel object that represents a physical pixel located at a horizontal coordinate of col and a vertical coordinate of row .

Listing 3 . Question 4.
leftPixel = pix.getPixels(col,row);

Answer 4

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 4

False. The code in Listing 3 has the wrong spelling for the method that returns the Pixel object. The correct spelling is shown in Listing 4 . You learned about the spelling (with no parameters) shown in Listing 3 in an earlier module.

Listing 4 . Answer 4.
leftPixel = pix.getPixel(col,row);

Back to Question 4

Answer 3

True. The object instantiated from the class named Java3012raRunner is an anonymous object because its reference is not saved in a named referencevariable in the current scope. Anonymous classes and anonymous objects are entirely different topics.

Back to Question 3

Answer 2

False. A discussion of anonymous classes would be a somewhat advanced topic. That topic is not explained in the module named Java3012: Using Nested Loops to Process Pixels .

Back to Question 2

Answer 1

True.

Back to Question 1

Miscellaneous

This section contains a variety of miscellaneous information.

Housekeeping material
  • Module name: Java3012r Review
  • File: Java3012r.htm
  • Published: 02/14/13
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-

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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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