Java vs. Scala

capitalize.java

public String capitalize(String str) {
    String[] words = str.toLowerCase().split(" ");
    for (int i = 0; i < words.length; i++) {
        words[i] = Character.toUpperCase(words[i].charAt(0)) + words[i].substring(1);
    }
    return TextUtils.join(" ", words);
}

capitalize.scala

def capitalize(str: String): String = str.toLowerCase().split(" ").map(_.capitalize).mkString(" ")