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 circles 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. area. Returns the area of the circle, which is calculated as area. Returns the area of the circles, which is calculated as area= PI * radius * radius diameter. Returns the diameter of the cirlce, which is calculated as diameter = radius * 2 circumference. 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 circles's radius, creating a Circle object, and then reporting the cirlce's area, diameter, and circumference.

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
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7)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 circles 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.
  • area. Returns the area of the circle, which is calculated as area. Returns the area of the circles, which is calculated as area= PI * radius * radius
  • diameter. Returns the diameter of the cirlce, which is calculated as diameter = radius * 2
  • circumference. 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 circles's radius, creating a Circle object, and then reporting the cirlce's area, diameter, and circumference.

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