Question

Write a program that contains functions YardtoKilo( ) to convert Yard to Kilometers and kilotoYard() Kilometers to Yard

1 Yard = 0.9114 Kilometer

Answer 1

Actually, a small correction needed 1 Yard=0.0009144 Kms and 1 Yard= 0.9144 metres

1. Accepting a user input whether YardtoKilo( ) function called or kilotoYard() called with a choice of 1 and 2 respectively otherwise error message is displayed.

2. Accepting a double value from the user for conversion as ip1 and ip2

3. calling the respective function and returning the result.

4. Displaying back to the console

We use this  BigDecimal.valueOf(a).toPlainString() for precision of resultant values.

Program:

import java.util.*;
import java.math.BigDecimal;
public class Main
{
public static double YardtoKilo(double yards)
{
       return (yards*0.0009114);
   }
   public static double KilotoYard(double kms)
{
       return (kms/0.9114);
   }
   public static void main(String[] args)
   {
      
       Scanner src=new Scanner(System.in);
       System.out.println("Please enter your choice");
       System.out.println("1.YardtoKilo\t2.KilotoYard");
       int choice=src.nextInt();
       if(choice==1)
       {
       System.out.println("Please enter the Yards");
       double ip1=src.nextDouble();
       double a=YardtoKilo(ip1);
System.out.println(BigDecimal.valueOf(a).toPlainString()+"kms");
       }
       else if(choice==2)
       {
       System.out.println("Please enter the Kilometres");
       double ip2=src.nextDouble();
       double a=KilotoYard(ip2);
System.out.println(BigDecimal.valueOf(a).toPlainString()+"yards");
       }
       else
       {
       System.out.println("Wrong choice");
       }
   }
}

Output:

Please enter your choice 1. YardtoKilo 2.KilotoYard Please enter the Yards 0.0009114kms ... Program finished with exit code o Press ENTER to exit console.

Please enter your choice 1.YardtoKilo 2.KilotoYard Please enter the Kilometres 1.097213078779899yards ... Program finished with exit code o Press ENTER to exit console.

Hope this helps!!!