Java Utililty Methods String Capitalize

if (value == null) {
    return value;
return value.substring(0, 1).toUpperCase() + value.substring(1);

return capitalize(var, false);

String capitalizedWord = word;
if (Character.isLowerCase(word.charAt(0))) {
    capitalizedWord = "" + Character.toUpperCase(word.charAt(0)) + word.substring(1);
return capitalizedWord;

String[] words = word.split(" ");
StringBuilder res = new StringBuilder();
for (String w : words) {
    res.append(capitalizeSingle(w));
return res.toString();

if (word == null)
    return null;
if (word.length() == 0)
    return word;
StringBuilder s = new StringBuilder(word.toLowerCase());
char c = s.charAt(0);
s.setCharAt(0, Character.toUpperCase(c));
return s.toString();
...

if (word.length() == 0)
    return word;
switch (word) {
case "of":
case "the":
case "in":
case "with":
case "and":
...

StringBuilder buff = new StringBuilder(word);
if (word.charAt(0) != '_') {
    buff.setCharAt(0, Character.toUpperCase(word.charAt(0)));
for (int i = 1; i < buff.length(); i++) {
    if (buff.charAt(i - 1) == '_') {
        buff.setCharAt(i, Character.toUpperCase(word.charAt(i)));
return buff.toString().replace("_", "");

if (isBlank(word)) {
    return word;
} else {
    return word.substring(0, 1).toUpperCase() + word.substring(1).toLowerCase();

StringBuilder sb = new StringBuilder(word);
sb.setCharAt(0, Character.toUpperCase(sb.charAt(0)));
return sb.toString();

StringBuffer buffer = new StringBuffer();
boolean isNewWord = true;
int length = words.length();
for (int i = 0; i < length; ++i) {
    char c = words.charAt(i);
    if (Character.isWhitespace(c)) {
        isNewWord = true;
    } else if (isNewWord) {
...