Database System Concepts
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Complete a properly encapsulated class named Circle, which inherits from Shape and
has the following:
A double instance variable named radius.
A default, no-arg constructor which sets radius to 1.
An overloaded constructor which takes one double parameter and sets the
instance variable radius to the value passed in.
Another overloaded constructor which takes three parameters, a double
for radius, a boolean for isFilled and a String for color, and sets
the instance variables accordingly, Hint:(Invoke the matching constructor
from the superclass)!!
A method named getArea() which calculates and returns the area of the
circle.
An overridden toString() method. The returned String should contain:
the value of radius, the area of the circle, then the result of calling the
toString() method from the superclass, the return String should be
formatted as follows:
Radius: 2.67
Area: 22.396099868176275
Filled: true
Color: Green
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Transcribed Image Text:Complete a properly encapsulated class named Circle, which inherits from Shape and has the following: A double instance variable named radius. A default, no-arg constructor which sets radius to 1. An overloaded constructor which takes one double parameter and sets the instance variable radius to the value passed in. Another overloaded constructor which takes three parameters, a double for radius, a boolean for isFilled and a String for color, and sets the instance variables accordingly, Hint:(Invoke the matching constructor from the superclass)!! A method named getArea() which calculates and returns the area of the circle. An overridden toString() method. The returned String should contain: the value of radius, the area of the circle, then the result of calling the toString() method from the superclass, the return String should be formatted as follows: Radius: 2.67 Area: 22.396099868176275 Filled: true Color: Green
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