Java Question: Base on this code TryMyMath.java import java.util.Scanner; public

Question

Java Question:

Base on this code

TryMyMath.java import java.util.Scanner;

public class TryMyMath

{ public static void main(String[] args)

{ Scanner scan = new Scanner(System.in); System.out.println("Enter Number: "); double n = scan.nextDouble(); root(n); n = round100th (n); System.out.println("Rounded: "+n); }

public static double round100th (double n)

{ n = Math.round(n/100); n = n * 100 ; return n; }

public static void root (double n)

{ double squareRoot = Math.sqrt(n); double cubeRoot = Math.cbrt(n); System.out.println("Square root is "+squareRoot); System.out.println("Cube root is "+cubeRoot); }

}

1. Write a Java application program (main) that calls the method written in the codes above, passing (1000.*Math.E) in main. Put main in the TryMyMath class.

Explanation / Answer

package org.students;

import java.util.Scanner;

public class TryMyMath {
   public static void main(String[] args) {
       //Scanner Object is used to read the inputs entered by the user
       Scanner scan = new Scanner(System.in);
      
       //Getting the number entered by the user
       System.out.println("Enter Number: ");
       double n = scan.nextDouble();
      
       //Calling the method root() by passing the number as argument
       root(n);
      
       //Calling the method round100th() by passing the number as argument
       n = round100th(n);
      
       //Displaying the Rounded value
       System.out.println("Rounded: " + n);
      
       System.out.println("___________________");
      
       //calling the method root() again by passing " 1000.*Math.E " as argument
       root(1000.*Math.E);
      
       //calling the method round100th() again by passing " 1000.*Math.E " as argument
       double n1 = round100th(1000.*Math.E);
      
       //Displaying the rounded values as output on console
       System.out.println("Rounding of "+1000.*Math.E+" is : " + n1);
   }

   /*This method will round the number to nearest 100th value
   * Params: number of double type
   * Return :rounded number of double type
   */
   public static double round100th(double n) {
       n = Math.round(n / 100);
       n = n * 100;
       return n;
   }

   /*
   * This method will calculate the square root and
   * cube root of a number and display the output on the console
   * Params : number of double type
   * Return : void
   */
   public static void root(double n) {
      
       //calculating the Square root of a number
       double squareRoot = Math.sqrt(n);
      
       //calculating the Cube root of a number
       double cubeRoot = Math.cbrt(n);
      
       //Displaying the Square root of a number
       System.out.println("Square root of "+n+" is " + squareRoot);
      
       //Displaying the Cube root of a number
       System.out.println("Cube root "+n+" is "+ cubeRoot);
   }
}

__________________________________________

Output:

Enter Number:
77
Square root of 77.0 is 8.774964387392123
Cube root 77.0 is 4.254320865115006
Rounded: 100.0
___________________
Square root of 2718.2818284590453 is 52.13714442179438
Cube root 2718.2818284590453 is 13.956124250860896
Rounding of 2718.2818284590453 is : 2700.0

__________________________________Thank You

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