Java Utililty Methods String Capitalize

if (isNotBlank(s) && !Character.isUpperCase(s.charAt(0))) {
    final StringBuilder sb = new StringBuilder(s);
    sb.setCharAt(0, Character.toUpperCase(s.charAt(0)));
    return sb.toString();
return s;

if (null == s)
    return null;
int len = s.length();
if (len == 0)
    return "";
char char0 = s.charAt(0);
if (Character.isUpperCase(char0))
    return s.toString();
...

char[] chars = docName.toLowerCase().toCharArray();
boolean isInitial = true;
for (int i = 0; i < chars.length; i++) {
    if (isInitial && Character.isLetter(chars[i])) {
        chars[i] = Character.toUpperCase(chars[i]);
        isInitial = false;
    } else {
        isInitial = !Character.isLetter(chars[i]);
...

String result = input;
if (input != null && input.length() > 0) {
    result = input.substring(0, 1).toUpperCase();
    if (input.length() > 1) {
        result += input.substring(1);
return result;
...

String s = name;
if (s != null && s.length() > 0) {
    StringBuffer sb = new StringBuffer(s.length());
    sb.append(s.substring(0, 1).toUpperCase());
    if (s.length() > 1) {
        sb.append(s.substring(1, s.length()));
    s = sb.toString();
...

if (!isLower(s.charAt(0))) {
    return s;
StringBuilder sb = new StringBuilder(s.length());
sb.append(Character.toUpperCase(s.charAt(0)));
sb.append(s.substring(1).toLowerCase());
return sb.toString();

int i = s.length();
if (i > 0) {
    char c1 = s.charAt(i);
    if (c1 > LIM_ST_LCASE && c1 < LIM_N_LCASE) {
        char c2 = UCASE[c1];
        if (c1 != c2) {
            char[] c = s.toCharArray();
            c[i] = c2;
...

String cs = null;
if (s != null && 0 < s.length()) {
    final char[] chars = s.toCharArray();
    chars[0] = Character.toUpperCase(chars[0]);
    cs = new String(chars);
return cs;

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

return capitalize(s, false);