please finish the code below, so when you to enter the number then it will be convert to the Roman number.

please note: Roman number is between 1 and 3999

// Java Program for above approach

class Main

{

// Function to calculate roman equivalent

static String convertToRoman(int num)

{

// storing roman values of digits from 0-9

// when placed at different places

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

String C[] = {"", "C", "CC", "CCC", "CD", "D",

"DC", "DCC", "DCCC", "CM"};

String X[] = {"", "X", "XX", "XXX", "XL", "L",

"LX", "LXX", "LXXX", "XC"};

String I[] = {"", "I", "II", "III", "IV", "V",

"VI", "VII", "VIII", "IX"};

// Converting to roman

if (num < 1 || num > 3_999) {

throw new IllegalArgumentException("Invalid input number: " + num);}

String thousands = M[num/1000];

String hundereds = C[(num%1000)/100];

String tens = X[(num%100)/10];

String ones = I[num%10];

String ans = thousands + hundereds + tens + ones;

return ans;

}

}