Introduction to Java Programming and Data Structures Comprehensive Version (11th Edition)
11th Edition
ISBN: 9780134700144
Author: Liang
Publisher: PEARSON
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Chapter 2.10, Problem 2.10.2CP
Program Plan Intro
Floating point:
- The values that contain decimal part in them are called as floating point literals.
- They are two basic types for java floating point numbers.
- Float
- Double
Float:
It holds single precision number format.
It can hold 4 bytes of data.
Example:
//declaration of a float value
float a = 2.356f;
Double:
It holds double precision number format.
It can hold 8 bytes of data.
Example:
//declaration of a double value
double a = 2.356;
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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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Figure (a) A point is inside the circle. (b) A circle is inside another circle.
(c) A circle overlaps another…
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Chapter 2 Solutions
Introduction to Java Programming and Data Structures Comprehensive Version (11th Edition)
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