Java Utililty Methods String Sub String

List of utility methods to do String Sub String

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Description

The list of methods to do String Sub String are organized into topic(s).

Method

StringsubstringBefore(String str, int endChar)
substring Before 
if (str == null) {
    return null;
if (endChar < 0) {
    return str;
int idx = str.indexOf(endChar);
if (idx == -1) {
...
StringsubstringBefore(String str, String separator)
substring Before 
if (isEmpty(str) || separator == null) {
    return str;
if (separator.length() == 0) {
    return EMPTY;
int pos = str.indexOf(separator);
if (pos == -1) {
...
StringsubstringBefore(String str, String separator)
substring Before 
int index = str.indexOf(separator);
if (index == -1) {
    return str;
return str.substring(0, index);
StringsubstringBefore(String str, String separator)
substring Before 
if (isEmpty(str) || separator == null) {
    return str;
if (separator.length() == 0) {
    return EMPTY;
int pos = str.indexOf(separator);
if (pos == INDEX_NOT_FOUND) {
...
StringsubstringBefore(String string, String delimiter)
Returns the substring before the first occurrence of a delimiter. 
int pos = string.indexOf(delimiter);
return pos >= 0 ? string.substring(0, pos) : string;
StringsubstringBefore(String text, String str)
substring Before 
int idx = text.indexOf(str);
if (idx != -1) {
    return text.substring(0, idx);
} else {
    return null;
StringsubstringBeforeChar(String str, int separator)
Return the substring before the first occurrence of a separator. 
if (isEmpty(str)) {
    return str;
int pos = str.indexOf(separator);
if (pos < 0) {
    return str;
return str.substring(0, pos);
...
StringsubstringBeforeFirst(String string, String delimiter)
substring Before First 
final int index = string.indexOf(delimiter);
if (index == -1) {
    return "";
return string.substring(0, index);
StringsubStringBeforeFirstTab(final String s)
Get the first field of a line 
if (s == null) {
    return null;
final int indexFirstTab = s.indexOf('\t');
if (indexFirstTab == -1) {
    return s;
return s.substring(0, indexFirstTab);
...
StringsubstringBeforeLast(final String str, final String separator)
substring Before Last 
if (isEmpty(str) || isEmpty(separator)) {
    return str;
final int pos = str.lastIndexOf(separator);
if (pos == INDEX_NOT_FOUND) {
    return str;
return str.substring(0, pos);
...