Java Utililty Methods String Trim Left

if (!hasLength(str)) {
    return str;
StringBuilder sb = new StringBuilder(str);
while (sb.length() > 0 && Character.isWhitespace(sb.charAt(0))) {
    sb.deleteCharAt(0);
return sb.toString();
...

return ltrim(str, " ");

int index = 0;
while (' ' == str.charAt(index++))
    ;
if (index > 0)
    str = str.substring(index - 1);
return str;

int i = 0;
while (i < str.length()) {
    switch (str.charAt(i)) {
    case ' ':
    case '\t':
        i++;
        continue;
    break;
return str.substring(i);

int start = 0, len = str.length();
if (null == charList)
    for (int i = 0; i < len; i++)
        if (Character.isWhitespace(str.charAt(i)))
            start++;
        else
            break;
else
...

if (str == null)
    return defaultValue;
int len = str.length();
int st = 0;
while ((st < len) && (str.charAt(st) <= ' ')) {
    st++;
return ((st > 0)) ? str.substring(st) : str;
...

if (text == null) {
    return EMPTY;
int i = 0;
int length = text.length();
while ((i < length) && (text.charAt(i) == c)) {
    i++;
return (i > 0 ? text.substring(i) : text);

if (input == null)
    return 0;
if (input.isEmpty())
    return 0;
int i = 0;
while (i < input.length() && input.charAt(i) == ' ')
    ++i;
return i;
...

if (s == null) {
    return null;
int index = 0;
int len = s.length();
while (index < len && Character.isWhitespace(s.charAt(index))) {
    if (s.charAt(index) == '\n') {
        break;
...

boolean findNonZero = false;
char paddingArr[] = inputString.trim().toCharArray();
StringBuffer sf = new StringBuffer();
for (int i = 0; i < paddingArr.length; i++) {
    if (!findNonZero) {
        sf.append(paddingArr[i]);
    } else if (findNonZero && (paddingArr[i] != '0')) {
        sf.append(paddingArr[i]);
...