Question

Write a class that has three overloaded static methods for calculating the areas of the
following geometric shapes:
- circles
- rectangles
- cylinders

Here are the formulas for calculating the area of the shapes.

Area of a circle: Area = π r2, where p is Math.PI and r is the circle's radius
Area of a rectangle: Area = Width x Length
Area of a cylinder: Area = π r2 h, where p is Math.PI, r is the radius of the cylinder's base, and h is the cylinder's height

Because the three methods are to be overloaded, they should each have the same name, but different parameter lists. Demonstrate the class in a complete program.

Sample Run
java Area

===·Area·Calculator·===↵
↵
·Enter·radius·to·calculate·circle·area:2.0↵
·Enter·width·to·calculate·rectangle·area:3.5↵
·Enter·length·to·calculate·rectangle·area:4.0↵
·Enter·base·radius·to·calculate·cylinder·area:8.0↵
·Enter·height·to·calculate·cylinder·area:5.7↵
·↵
--------↵
Results:↵
--------↵
↵ The·area·of·the·circle·is:·12.57↵
The·area·of·the·rectangle·is:·14.00↵
The·area·of·the·cylinder·is:·1146.05↵

(In Java)

Answer 1

NOTE : PROGRAM IS DONE WITH JAVA PROGRAMMING LANGUAGE.

HERE area_shape CLASS HAS THREE OVERLOADED STATIC METHOD area() WITH DIFFERENT PARAMETERS, THEY AREA CALLED IN MAIN FUNCTION OF DRIVER CLASS overload_area.

IN overload_area CLASS THE OBJECT ob IS CREATED BY CLASS  area_shape AND ALL OVERLOADED STATIC METHODS ARE EXECUTED WITH THE OBJECT ob.

PROGRAM

import java.util.Scanner;
class area_shape
{
/* static function area is overloaded with different parameters*/
public static double area(double r)
{
double res;
   res=Math.PI*r*r;
   return res;
}
public static double area(double w, double h)
{
double res;
   res=w*h;
   return res;
}
public static double area(double r, double h,double p)
{
double res;
   res=p*r*r*h;
   return res;
}
}

public class overload_area
{
public static void main(String[] args)
{
   double r,width,length,h,br,p;
   /* scanner object */
   Scanner sc=new Scanner(System.in);
   /* ob is object of class area_shape*/
   area_shape ob= new area_shape();
   p=Math.PI;
   /* console input */
   System.out.println("\n=== Area Calculator ===\n");
   System.out.print("Enter radius to calculate circle area :");
   r=sc.nextDouble();
   System.out.print("Enter width to calculate rectangle area:");
   width=sc.nextDouble();
   System.out.print("Enter length to calculate rectangle area:");
   length=sc.nextDouble();
   System.out.print("Enter base radius to calculate cylinder area:");
   br=sc.nextDouble();
   System.out.print("Enter height to calculate cylinder area::");
   h=sc.nextDouble();
   System.out.println("\n--------------");
   System.out.println("Results:");
   System.out.println("--------------");
   /* print result*/
   System.out.printf("The area of the circle is: %.2f\n",ob.area(r));
System.out.printf("The area of the rectangle is: %.2f\n",ob.area(width,length));
System.out.printf("The area of the cylinder is: %.2f\n", ob.area(br,h,p));
   }
}  

SCREEN SHOT

OUTPUT