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

StringsubstringBeforeLast(String str, String separator)

Gets the substring before the last occurrence of a separator. 

if (isEmpty(str) || isEmpty(separator)) {
    return str;
int pos = str.lastIndexOf(separator);
if (pos == -1) {
    return str;
return str.substring(0, pos);
...
StringsubstringBeforeLast(String str, String separator)
substring Before Last 
if (str == null || separator == null || str.length() == 0 || separator.length() == 0) {
    return str;
int pos = str.lastIndexOf(separator);
if (pos == -1) {
    return str;
return str.substring(0, pos);
...
StringsubStringBeforeLast(String str, String separator)
returns string before last entry of separator in case string doesn't contain separator -- returns whole string 
int from = str.lastIndexOf(separator);
return from == -1 ? str : str.substring(0, from);
StringsubstringBeforeLast(String text, String separator)
substring Before Last 
int index = lastIndexOf(text, separator);
return substringBefore(text, index);
StringsubstringBeforeLastChar(String str, String separator)
substring Before Last Char 
if (isEmpty(str) || isEmpty(separator)) {
    return str;
int pos = str.lastIndexOf(separator);
if (pos == INDEX_NOT_FOUND) {
    return str;
if (pos == 0) {
...
StringsubstringBeforeLastIgnoreCase(final String target, final String separator)
substring Before Last Ignore Case 
if ("".equals(target))
    return target;
if ("".equals(separator))
    return target;
final String tempStr = target.toUpperCase();
final String tempSeparator = separator.toUpperCase();
final int index = tempStr.lastIndexOf(tempSeparator);
if (index == -1)
...
StringsubstringBetween(final String s, final String tag)

Gets the String that is nested in between two instances of the same String. 

return substringBetween(s, tag, tag);
StringsubstringBetween(final String str, final String startToken, final String endToken)
substring Between 
int firstToken = str.indexOf(startToken) + 1;
int secondToken = str.indexOf(endToken, firstToken);
firstToken = firstToken < 0 ? 0 : firstToken;
secondToken = secondToken < 0 ? 0 : secondToken;
return str.substring(firstToken, secondToken);
StringsubstringBetween(String line, final String delimiterBefore, final String delimiterAfter)
substring Between 
final int indexAfterFirstFromChar = line.indexOf(delimiterBefore) + 1;
final int firstIndexOfToChar = line.indexOf(delimiterAfter, indexAfterFirstFromChar);
return line.substring(indexAfterFirstFromChar, firstIndexOfToChar);
StringsubstringBetween(String s, String part1, String part2)
Returns the first instance of String found exclusively between part1 and part2. 
String sub = null;
int i = s.indexOf(part1);
int j = s.indexOf(part2, i + part1.length());
if (i != -1 && j != -1) {
    int nStart = i + part1.length();
    sub = s.substring(nStart, j);
return sub;
...