Use a menu driven programming technique to design a program

Use a menu driven programming technique to design a program using do while to calculate the volume of different shapes (minimum 4 shapes) ??

Solution

I have written the code in Java.

//Code starts here

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.*;
public class MenuOfVolume
{
   public static void main(String[] args) throws Exception
   {
       java.util.Scanner in = new java.util.Scanner(System.in);
       String reqyn;
       int reqchoice;
      
       do{
           System.out.println(\"Which shape\'s volume you want to calculate(Choose one option):\ 1.Cube\ 2.Cylinder\ 3.Sphere\ 4.Cone\");//printing menu
           reqchoice = in.nextInt();
           double a,r,h;
           switch(reqchoice){
           case 1:{
           System.out.println(\"Enter the length of cube\");
           a = in.nextDouble();
           System.out.println(\"Volume of Cube is:\ \");
           System.out.println(a*a*a);//Calculating and printing value of volume of cube
           break;
           }
           case 2:{
           System.out.println(\"Enter the radius of cylinder\");
           r = in.nextDouble();          
           System.out.println(\"Enter the height of cylinder\");
           h = in.nextDouble();          
           System.out.println(\"Volume of Cylinder is:\ \");
           System.out.println(3.14*r*r*h);//Calculating and printing value of volume of Cylinder
           break;
           }
           case 3:{
           System.out.println(\"Enter the radius of sphere\");
           r = in.nextDouble();          
           System.out.println(\"Volume of Sphere is:\ \");
           System.out.println((4/3)*3.14*r*r*r);//Calculating and printing value of volume of Sphere
           break;
           }
           case 4:{
           System.out.println(\"Enter the radius of cone\");
           r = in.nextDouble();          
           System.out.println(\"Enter the height of cone\");
           h = in.nextDouble();          
           System.out.println(\"Volume of Cone is:\ \");
           System.out.println(3.14*r*r*h/3);//Calculating and printing value of volume of Cone
           break;
           }
           default : System.out.println(\"Wrong choice\");
           }
           System.out.println(\"Enter you request:(Y/N)\");
           reqyn = in.next();

       }while (reqyn.equals(\"Y\"));
      
  
   }
}