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True or False?
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.
This image was also inserted for the purpose of inserting space between the questions and the answers.
True
True. One example is the graphical addition of vectors using the tail-to-head placement.
True, because according to Kjell, a vector doesn't have a position. Hence, there is nothing in the underlying data for a GM2D02.Vector object that specifies a position.
False. The draw method of the GM2D02.Vector class requires two parameters:
True
False. An object of type Ellipse2D.Double represents an ellipse that is bounded by the four sides of a rectangle. If the rectangle is square, theellipse becomes a circle .
True
True
False. One of the hallmarks of object-oriented programming is that objects do know how to do useful things for themselves.
False. The Line2D.Double class is a member of the standard Java library, whereas the GM2D02.Line class is a member of the special game math library named GM2D02 .
True
False. A call to the draw method of the GM2D02.Line class causes an object of the standard Java Line2D.Double class to be rendered onto the specified graphics context.
True
True
True
False. The returned value of the createImage method is type Image .
True
True
True
H. All of the above
True
False. All Java parameters are passed to methods by value.
A. An underlying data object
False. GM2D02.Vector objects represent themselves as lines with small circles at their heads in a graphics context for the benefit of humanobservers.
False. GM2D02.Point objects represent themselves as small black circles in a graphics context for the benefit of human observers.
True
False. A point is simply a location in space. It has no width, depth, or height. Therefore, it cannot be seen by the human eye, which means that we can'tdraw a point on the computer screen. However, it is possible to draw an object on the computer screen that indicates the location of the point.
False. Points in space exist regardless of whether or not visual objects are created to mark the locations of the points.
True
This section contains a variety of miscellaneous information.
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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