Circle Class (This is in JAVA) /** * Defines a basic shape with just area * * @author Jo Belle * @version 0.2 (10/05/2020) */ public class Shape{ private double area; public Shape(){ area = 0.0; } public Shape( double a ){ this.area = a; } public void setArea( double a ){ area = a; } public double getArea(){ return area; } public String toString(){ return "Shape:\n\tarea: " + area; } }/** * Create a simple Circle object * * @author Jo Belle * @version 0.2 (10/12/2020) */ public class ShapeDriver{ public static void main( String[] args ){ Circle cir = new Circle( ); cir.setRadius( 5.0 ); System.out.println( cir.toString() ); } } Given the code above, write a Circle class (and save it in a file named Circle.java) that inherits from the Shape class. Include in your Circle class, a single private field double radius. Also include a method void setRadius(double r) (which also sets area) and a method double getRadius() (which also returns the current radius). Change the accessibility modifier for area in the Shape class to be more appropriate for a base class. Make sure that ShapeDriver's main() method executes and produces the following output: Shape: area: 78.53981633974483 radius: 5.0 Submit both your Circle.java and your Shape.java files.
OOPs
In today's technology-driven world, computer programming skills are in high demand. The object-oriented programming (OOP) approach is very much useful while designing and maintaining software programs. Object-oriented programming (OOP) is a basic programming paradigm that almost every developer has used at some stage in their career.
Constructor
The easiest way to think of a constructor in object-oriented programming (OOP) languages is:
Circle Class (This is in JAVA)
/** * Defines a basic shape with just area * * @author Jo Belle * @version 0.2 (10/05/2020) */ public class Shape{ private double area; public Shape(){ area = 0.0; } public Shape( double a ){ this.area = a; } public void setArea( double a ){ area = a; } public double getArea(){ return area; } public String toString(){ return "Shape:\n\tarea: " + area; } }/** * Create a simple Circle object * * @author Jo Belle * @version 0.2 (10/12/2020) */ public class ShapeDriver{ public static void main( String[] args ){ Circle cir = new Circle( ); cir.setRadius( 5.0 ); System.out.println( cir.toString() ); } }
Given the code above, write a Circle class (and save it in a file named Circle.java) that inherits from the Shape class. Include in your Circle class, a single private field double radius. Also include a method void setRadius(double r) (which also sets area) and a method double getRadius() (which also returns the current radius). Change the accessibility modifier for area in the Shape class to be more appropriate for a base class. Make sure that ShapeDriver's main() method executes and produces the following output:
Shape: area: 78.53981633974483 radius: 5.0
Submit both your Circle.java and your Shape.java files.
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