How can I make a simple vowel counter method in Java?

Question

Here's my method:

public char[] ReturnAllVowels(String word)
{
    for (int i = 0; i < word.length(); i++)
    {
        if (word.contains("a" || "e" || "i" || "o" || "u"))     
        {

        }
    }        
}

It says that || cannot be applied to String class. How can I do this then?

Solution 1

char ch = word.charAt (i);
if (ch == 'a' || ch=='e') {

}

Solution 2

Using regular expressions you can try.

int count = word.replaceAll("[^aeiouAEIOU]","").length();

Solution 3

    String regex = "[aeiou]";               
    Pattern p = Pattern.compile(regex,Pattern.CASE_INSENSITIVE);   
    int vowelcount = 0;
    Matcher m = p.matcher(content);
    while (m.find()) {
      vowelcount++;
    }
    System.out.println("Total vowels: " + vowelcount);

Comments

[Roman]

Hey, minusers, leave comments at least.