Numbers To Roman Numeral in Java

A simple program in Java that will ask the user to give a number in integer format and then the program will convert the given decimal number into roman numeral equivalent.

I hope you will find my work useful and beneficial. If you have some questions about programming, about my work please send me an email at jakerpomperada@gmail.comand jakerpomperada@yahoo.com. People here in the Philippines can contact me at  my mobile number 09173084360.

Thank you very much and Happy Programming.

Sample Program Output

Program Listing

// decimal_romans.java

// Programmer : Mr. Jake R. Pomperada, MAED-IT

// Date       : July 19, 2015

// Tools      : Netbeans 8.0.2

// Email      : jakerpomperada@yahoo.com and jakerpomperada@gmail.com

import java.util.Scanner;

class decimal_romans

{

public static void main(String args[]) 

{

     Scanner input = new Scanner(System.in);

        

      char ch;

     

 do {

String thousands[]={"","M","MM","MMM","MMMM"};

String hundreds[]={"","C","CC","CCC","CD","D","DC","DCC","DCCC","CM"};

String tens[]={"","X","XX","XXX","XL","L","LX","LXX","LXXX","XC"};

String units[]={"","I","II","III","IV","V","VI","VII","VIII","IX"};

System.out.println();

System.out.print("\t  NUMBER TO ROMAN NUMERALS ");

System.out.println("\n");

System.out.print("Enter a Number : ");

int number = input.nextInt();

if(number>0 && number<5000)

{

int th=number/1000;

int h=(number/100)%10;

int t=(number/10)%10;

int u=number%10;

System.out.println("Roman Equivalent= "+thousands[th]+hundreds[h]+tens[t]+units[u]);

}

 else

System.out.println("nYou entered a number out of Range."

        + "Please enter a number in the range [1-4999] only");

System.out.print("\nDo you want to continue (Type y or n) : ");

  ch = input.next().charAt(0);                       

} while (ch == 'Y'|| ch == 'y');  

      System.out.println();

      System.out.print("\t THANK YOU FOR USING THIS PROGRAM");

      System.out.println("\n\n");

 }

}