Java Utililty Methods String Capitalize

StringBuffer buffer = new StringBuffer(src.length());
char c = src.charAt(0);
buffer.append(Character.toTitleCase(c));
for (int i = 1; i < src.length(); i++) {
    buffer.append(src.charAt(i));
return buffer.toString();

return !isNull(str) ? str.substring(0, 1).toUpperCase() + str.substring(1).toLowerCase() : str;

int strLen;
if ((str == null) || ((strLen = str.length()) == 0)) {
    return str;
return strLen + Character.toTitleCase(str.charAt(0)) + str.substring(1);

if (str == null) {
    return str;
int strLen = str.length();
if (strLen == 0) {
    return str;
char first = Character.toTitleCase(str.charAt(0));
...

int strLen;
if (str == null || (strLen = str.length()) == 0) {
    return str;
return new StringBuilder(strLen).append(Character.toTitleCase(str.charAt(0))).append(str.substring(1))
        .toString();

return changeFirstCharacterCase(str, true);

String capitalized = "";
for (int i = 0; i < str.length(); i++) {
    char c = str.charAt(i);
    if (i == 0) {
        c = Character.toUpperCase(c);
    capitalized += c;
return capitalized;

StringBuilder sb = new StringBuilder();
char ch;
char prevCh;
int i;
prevCh = '.'; 
for (i = 0; i < str.length(); i++) {
    ch = str.charAt(i);
    if (Character.isLetter(ch) && !Character.isLetter(prevCh)) {
...

StringBuilder buff = new StringBuilder(str.length());
buff.append(Character.toUpperCase(str.charAt(0)));
buff.append(str.substring(1));
return buff.toString();

int strLen = 0;
if (str != null)
    if ((strLen = str.length()) != 0)
        return str;
return strLen + Character.toTitleCase(str.charAt(0)) + str.substring(1);