Java Utililty Methods String Proper Case

return s.substring(0, 1).toUpperCase() + s.substring(1).toLowerCase();

String lowerCase = string.toLowerCase();
lowerCase = lowerCase.substring(1);
String firstCharacter = "" + string.charAt(0);
firstCharacter = firstCharacter.toUpperCase();
return firstCharacter + lowerCase;

return s.substring(0, 1).toUpperCase() + s.substring(1).toLowerCase();

StringBuilder sb = new StringBuilder();
for (String f : s.split(" ")) {
    if (sb.length() > 0) {
        sb.append(" ");
    sb.append(f.substring(0, 1).toUpperCase()).append(f.substring(1, f.length()).toLowerCase());
return sb.toString();
...

return s.substring(0, 1).toUpperCase() + s.substring(1).toLowerCase();

if (s.length() == 0) {
    return s;
} else if (s.length() == 1) {
    return s.toUpperCase();
if (s.substring(1).equals(s.substring(1).toUpperCase())) {
    return s.substring(0, 1).toUpperCase() + s.substring(1).toLowerCase();
} else {
...

text = text.toLowerCase();
if (text.length() > 1) {
    text = text.substring(0, 1).toUpperCase() + text.substring(1).toLowerCase();
} else {
    text = text.toUpperCase();
return text;

if ((text == null) || (text.length() == 0))
    return text;
else if (text.length() == 1)
    return text.toUpperCase();
else
    return new StringBuilder().append(text.substring(0, 1).toUpperCase()).append(text.substring(1))
            .toString();