Apex: Title Case Every Word

public class Utilities {

    public static String titleCaseEveryWord(String str) {
        List<String> words = str.toLowerCase().split(' ');
        String finalStr = '';
        for (String word : words) {
            finalStr += word.substring(0, 1).toUpperCase() + word.substring(1, word.length()) + ' ';
        }
        return finalStr;
    }

}