Circle ClassWrite a Circle class that has the following fields:• radius: a double• PI: a f...

Circle Class

Write a Circle class that has the following fields:

• radius: a double

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• 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.

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• setRadius. A mutator method for the radius field.

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• getRadius. An accessor method for the radius field.

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• 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 as diameter = radius * 2

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

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