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Concept explainers
Circle Class
Write a Circle class that has the following fields:
- radius: a double
- PI: a final double initialized with the value 3.14159
The class should have the following methods:
- Constructor. Accepts the radius of the circle as an argument.
- Constructor. A no-arg constructor that sets the radi us field to 0.0.
- setRadius. A mutator method for the radius field.
- GetRadius. An accessor method for the radius field.
- area. Returns the area of the circle, which is calculated as
area = PI * radius * radius
- diameter. Returns the diameter of the circle, which is calculated as
diameter = radius * 2
- circumference. Returns the circumference of the circle, which is calculated as
circumference = 2 * PI * radius
Write a
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