Java program to Convert Ordinary Number to Roman

Here is the Java program to convert Ordinary Number to Roman Number.

Input : 1500
Output : MD

Ordinary Number to Roman :

[java]

package com.onlinetutorialspoint.javaprograms;

import java.util.Scanner;

public class OrdinaryNumber_RomanNumber {

   public static void main(String k[]) {
       Scanner sc = new Scanner(System.in);
       System.out.print("Number to Convert to Roman : ");
       int number = sc.nextInt();
       Roman r = new Roman();
       r.set(number);
       r.convert();
   }
}

class Roman {
int n;

   void set(int x) {
       n = x;
   }

   void convert() {
       if (n <= 0) {
           System.out.print("NO ROMAN FOR THE GIVEN NUMBER");
       } else {
           while (n >= 1000) {
               System.out.print("M");
               n = n – 1000;
           }
           if (n >= 900) {
               System.out.print("CM");
               n = n – 900;
           }
           if (n >= 500) {
               System.out.print("D");
               n = n – 500;
           }
           if (n >= 400) {
               System.out.print("CD");
               n = n – 400;
           }
           while (n >= 100) {
               System.out.print("C");
               n = n – 100;
           }
           if (n >= 90) {
               System.out.print("XC");
               n = n – 90;
           }
           if (n >= 50) {
               System.out.print("L");
               n = n – 50;
           }
           if (n >= 40) {
               System.out.print("XL");
               n = n – 40;
           }
           while (n >= 10) {
               System.out.print("X");
               n = n – 10;
           }
           if (n >= 9) {
               System.out.print("IX");
               n = n – 9;
           }
           if (n >= 5) {
               System.out.print("V");
               n = n – 5;
           }
           if (n >= 4) {
               System.out.print("IV");
               n = n – 4;
           }
           while (n >= 1) {
               System.out.print("I");
               n = n – 1;
           }
           System.out.println();
       }
   }
}

[/java]

Output :

Number to Convert to Roman : 1500
MD