Question
Create a class called Circle with the following members: Fields: radius , a double variable to store length of radius. PI , a double constant
Create a class called Circle with the following members:
Fields:
radius, a double variable to store length of radius.
PI, a double constant to store value of ?? using Math.PI.
Methods:
Circle, a constructor that gets a double input and assigns it to radius.
setRadius, a set method to assign a value to radius.
getRadius, a get method to return the value of radius.
getPI, a get method to return the value of PI.
circumference, a method that calculates and returns circumference using the following formula:
?? = 2??
area, a method that calculates and returns area using the following formula:
???? = ??2
toString, a method to return a string containing the following information: Name of the shape, radius, circumference, and area.
The Cylinder Class
Create a subclass of Circle called Cylinder and add the following members:
Field:
height, a double variable to store length of height. Methods:Cylinder, a constructor that gets two double inputs and assigns them to radius and height.
Note: In the body of the constructor you should use the following code:
super(radius);
this.height = height;
setHeight, a set method to assign a value to height.
getHeight, a get method to return the value of height. surfaceArea, a method that calculates and returns surface area using the following formula:
?? ????= ?? ???? + 2 ????
volume, a method that calculates and returns volume using the following formula:
= ???? ????
toString, an overridden method to return a string containing the following information: Name of the shape, radius, height, surface area, and volume.
TheConeClass
Create a subclass of Cylinder called Cone and add the following members:
Methods:
Cone, a constructor that gets two double inputs and assigns them to radius and height
Note: In the body of the constructor you should call constructor of Cylinder class using super
keyword.
surfaceArea, an overridden method that calculates and returns surface area using the following formula:
?? ???? = ?? ???? ?????2 + ????2 + ????
volume, an overridden method that calculates and returns volume using the following formula:
= ???? ? 3
Note: You should call volume method of Cylinder class using super.volume() in this method.
toString, an overridden method to return a string containing the following information: Name of the shape, radius, height, surface area, and volume.
Then Create a test class called TestShape. In the main method of this class create one object of Circle class, one object of Cylinder class, and one object of Cone class using their constructors. After creating all objects, use System.out.printf to display their information.
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