Question: Write a Java program that takes a Roman numeral character as input (I, V, X, L, C, D, or M) and prints an integer according to the following rules:

 Question; Write a Java program that takes a Roman numeral character as input (I, V, X, L, C, D, or M) and prints an integer according to the following rules:

Ans: 

package HelloWorld;

import java.util.Scanner;

public class LearningJava {

public static void main(String[] args) {

// Question: Roman Numeral Converter

//

// Write a Java program that takes a Roman numeral character as input (I, V, X, L, C, D, or M) and prints an integer according to the following rules:

//

// I is equivalent to 1

// V is equivalent to 5

// X is equivalent to 10

// L is equivalent to 50

// C is equivalent to 100

// D is equivalent to 500

// M is equivalent to 1000

// If the input character is not a valid Roman numeral, print -1.

Scanner scan = new Scanner(System.in);

char ch = scan.next().charAt(0);

if (ch == 'I') {

System.out.print("1");

}

else if (ch == 'V'){

System.out.print("5");

}

else if (ch == 'X') {

System.out.print("10");

}

else if (ch == 'L') {

System.out.print("50");

}

else if (ch == 'C') {

System.out.print("100");

}

else if (ch == 'D') {

System.out.print("500");

}

else if (ch == 'M') {

System.out.print("1000");

}

else {

System.out.print("-1");

}

}

}