Java Utililty Methods String Capitalize

char begin = Character.toUpperCase(string.charAt(0));
if (string.length() == 1) {
    return Character.toString(begin);
} else {
    return begin + string.substring(1);

char[] letters = string.toCharArray();
for (int index = 0; index < letters.length; index++) {
    if (index != 0 && !Character.isWhitespace(letters[index - 1]))
        continue;
    if (!Character.isLowerCase(letters[index]))
        continue;
    letters[index] = Character.toUpperCase(letters[index]);
return new String(letters);

if (string == null)
    return null;
char[] characters = string.toCharArray();
boolean capitalize = true;
for (int i = 0; i < characters.length; i++) {
    char character = characters[i];
    if (Character.isWhitespace(character)) {
        capitalize = true;
...

if (index >= string.length() || index < 0) {
    throw new StringIndexOutOfBoundsException(index);
final StringBuilder stringBuilder = new StringBuilder(string.length());
if (index != 0) {
    stringBuilder.append(string, 0, index);
stringBuilder.append(Character.toUpperCase(string.charAt(index)));
...

if (string0 == null) {
    return null;
int length = string0.length();
if (length == 0) {
    return string0;
} else if (length == 1) {
    return string0.toUpperCase();
...

StringBuilder resultText;
char previousC;
resultText = new StringBuilder();
previousC = '.';
for (int i = 0; i < text.length(); i++) {
    char c = text.charAt(i);
    if (Character.isLetter(c) && !Character.isLetter(previousC)) {
        resultText.append(Character.toUpperCase(c));
...

if (text != null && text != "") {
    return (text.substring(0, 1)).toUpperCase() + text.substring(1);
} else {
    return "";

if (isEmpty(text)) {
    return text;
char chars[] = text.toCharArray();
chars[0] = Character.toUpperCase(chars[0]);
return new String(chars);

char first = text.charAt(0);
if (Character.isUpperCase(first)) {
    return text;
first = Character.toUpperCase(first);
StringBuilder builder = new StringBuilder();
builder.append(first);
builder.append(text.substring(1));
...

StringBuilder cap = new StringBuilder();
text = text.replace("_", " ");
for (String t : text.split(" ")) {
    if (t.length() > 2) {
        cap.append(t.substring(0, 1).toUpperCase()).append(t.substring(1).toLowerCase()).append(" ");
    } else {
        cap.append(t).append(" ");
return cap.substring(0, cap.length() - 1);