A+ Guide To It Technical Support
10th Edition
ISBN: 9780357108291
Author: ANDREWS, Jean.
Publisher: Cengage,
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Expert Solution & Answer
Chapter 18, Problem 1TC
Explanation of Solution
Given:Â
A mac OS.
To find:The reason why the scrollbar is hidden from the view in mac OS.
Solution:
The touchpad is present on a mac OS laptop, which is known as the trackpad. A user can use multiple fingers and actions to use a trackpad. The reason behind the scrollbar being hidden from the view is that the pages can be easily scrolled up and down by using fingers on the trackpad.
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3. Problem Description: Define the Circle2D class that contains:
Two double data fields named x and y that specify the center of the circle with get
methods.
• A data field radius with a get method.
•
A no-arg constructor that creates a default circle with (0, 0) for (x, y) and 1 for radius.
•
A constructor that creates a circle with the specified x, y, and radius.
•
A method getArea() that returns the area of the circle.
•
A method getPerimeter() that returns the perimeter of the circle.
•
•
•
A method contains(double x, double y) that returns true if the specified point (x, y) is inside
this circle. See Figure (a).
A method contains(Circle2D circle) that returns true if the specified circle is inside this
circle. See Figure (b).
A method overlaps (Circle2D circle) that returns true if the specified circle overlaps with this
circle. See the figure below.
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(a)
(b)
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Figure (a) A point is inside the circle. (b) A circle is inside another circle.
(c) A circle overlaps another…
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