OOP Program-16

(16) Write a program that prompts the user to enter a decimal number and displays the number in a fraction.
Hint: Read the decimal number as a string,  extract the integer part and fractional part from the string. 

Program Code:

 import java.util.Scanner;

import java.math.BigInteger;

public class OOP_16

{

 public static void main(String[] args) 

 {

  Scanner input = new Scanner(System.in);

  Double d;

  System.out.print("Enter a decimal number= ");

  String[] decimal = input.nextLine().split("[.]");

  BigInteger b1 = new BigInteger(decimal[0]);

  BigInteger b2 = new BigInteger((decimal[1]));

  if(decimal[0].charAt(0) == '-')

  {

   d = b1.doubleValue() - (b2.intValue() / Math.pow(10, decimal[1].length()));

  }

  else

  {

   d = b1.doubleValue() + (b2.intValue() / Math.pow(10, decimal[1].length()));

  }

  System.out.println("The fraction number is= " +d);

 }

}

Output: