Please help to print the result

public static String romanDigit(int n, String one, String five, String ten)
The above method translates one decimal digit, using the strings
specified for the one, five and ten values.

public class P5_21 { 
    public static String romanDigit(int number, String one, String five, String ten) { 
        if (number == 1) { 
            return one; 
        } 
        if (number == 2) { 
            return one + one; 
        } 
        if (number == 3) { 
            return one + one + one; 
        } 
        if (number == 4) { 
            return one + five; 
        } 
        if (number == 5) { 
            return five; 
        } 
        if (number == 6) { 
            return five + one; 
        } 
        if (number == 7) { 
            return five + one + one; 
        } 
        if (number == 8) { 
            return five + one + one + one; 
        } 
        return one + ten; 
    } 
    public static String integerToRoman(int number) { 
        String ones = romanDigit(number % 10, "I", "V", "X"); 
        number /= 10; 
        String tens = romanDigit(number % 10, "X", "L", "C"); 
        number /= 10; 
        String hundreds = romanDigit(number % 10, "C", "D", "M"); 
        number /= 10; 
        String thousands = romanDigit(number % 10, "M", "M", "M"); 
        return thousands + hundreds + tens + ones; 
    } 
}

Create the main method and wrap your method calls in System.out.println();
That would be one way of doing it.