Question: Write a Circle class that has the following fields: radius : a double PI : a final double initialized with the value 3.14159 The 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 radius field to 0.0.

setRadius. A mutator method for the radius field.

getRadius. An accessor method for the radius field.

getArea. Returns the area of the circle, which is calculated as

area = PI * radius * radius

getDiameter. Returns the diameter of the circle, which is calculated asdiameter = radius * 2

getCircumference. Returns the circumference of the circle, which is calculated ascircumference = 2 * PI * radius

Write a program that demonstrates the Circle class by asking the user for the circles radius, creating a Circle object, and then reporting the circles area, diameter, and circumference.

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