Decimal To Roman Numeral in Java

Machine Problem in Java

Write a program to ask the user to give a number and then the program will convert the given number into Roman numeral equivalent.

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Program Listing

/**
Machine Problem in Java

Write a program to ask the user to give a number and then the 
program will convert the given number into Roman numeral 
equivalent.

 @author Jake Rodriguez Pomperada,MAED-IT, MIT
 www.jakerpomperada.com / www.jakerpomperada.blogspot.com
 jakerpomperada@gmail.com
 Bacolod City, Negros Occidental Philippines
 January 14, 2021 Thursday 8:58 PM
*/

import java.util.*;


public class Decimal_Roman_Numeral {

	private static String Convert_To_Roman_Numeral(int num) {
		String[] romanCharacters = { "M", "CM", "D", "C", "XC", "L", "X", "IX", "V", "I" };
		int[] romanValues = { 1000, 900, 500, 100, 90, 50, 10, 9, 5, 1 };
		String result = "";
		 
		for (int i = 0; i < romanValues.length; i++) {
		int numberInPlace = num / romanValues[i];
		if (numberInPlace == 0) continue;
		result += numberInPlace == 4 && i > 0? romanCharacters[i] + romanCharacters[i - 1]:
		new String(new char[numberInPlace]).replace("\0",romanCharacters[i]);
		num = num % romanValues[i];
		}
		return result;
		}
		 
	
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		
		 Scanner sc=new Scanner(System.in);
	        int num=0;
	        
	        System.out.println();  
		    System.out.println("\tDecimal To Roman Numeral in Java");
		    System.out.println();
	     
	        System.out.print("\tGive a Number : ");
	        num=sc.nextInt();
	     
	        System.out.println();
	        System.out.println("\tThe Decimal Value   : " + num);
	        System.out.println("\tRoman Numeral Value : "
	        		+ Convert_To_Roman_Numeral(num));
	        System.out.println();
	        System.out.println("\tEnd of Program");
	        System.out.println("\n");
	        sc.close();
	}

} // End of Code