Convert Text to Titlecase in Java

titlecase.java

public static String toTitleCase(String str)
    {
        String[] words = str.trim().split(" ");
        StringBuilder ret = new StringBuilder();
        for(int i = 0; i < words.length; i++)
        {
            if(words[i].trim().length() > 0)
            {
                Log.e("words[i].trim",""+words[i].trim().charAt(0));
                ret.append(Character.toUpperCase(words[i].trim().charAt(0)));
                ret.append(words[i].trim().substring(1));
                if(i < words.length - 1) {
                    ret.append(' ');
                }
            }
        }

        return ret.toString();
    }