Rearrange the Word according to position of Vowel

RearrangeVowel.java

/*
Input a word check for the position of the first occurring vowel and perform the following operation.

(a) Words that begin with a vowel are concatenated with “Y”.
    Eg: EUROPE becomes EUROPEY
    
(b) Words that contain a vowel in-between should have the first part from the position of the vowel till the end,
    followed by the part of the string from beginning till the position of the vowel and is concatenated by "C".
    Eg: PROJECT becomes OJECTPRC

(c) Words which do not contain a vowel are concatenated with "N”.
    Eg: SKY becomes SKYN
*/

import java.util.Scanner;

class RearrangeVowel {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        System.out.println("Enter a word: ");
        String word = sc.nextLine();

        word = word.toUpperCase();

        int vowelPosition = 0;
        boolean isVowelPresent = false;

        for (int i = 0; i < word.length(); i++)
            if (word.charAt(i) == 'A' || word.charAt(i) == 'E' || word.charAt(i) == 'I' || word.charAt(i) == 'O'
                    || word.charAt(i) == 'U') {
                vowelPosition = i;
                isVowelPresent = true;
                break;
            }

        if (!isVowelPresent)
            System.out.println(word + "N");

        else if (vowelPosition == 0)
            System.out.println(word + "Y");

        else
            System.out.println(word.substring(vowelPosition, word.length()) + "C" + word.substring(0, vowelPosition));
    }
}