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

StringSubString(String x, long y)
Sub String 
return x.substring((int) y);
Stringsubstring(StringBuffer buf, int start, int lim)
substring 
int len = lim - start;
char[] result = new char[len];
buf.getChars(start, lim, result, 0);
return String.valueOf(result);
Stringsubstring2ByteString(String str, int endIndex)
substring Byte String 
if (str == null) {
    return null;
byte[] strByte = str.getBytes();
int i, strLen;
strLen = strByte.length;
if (strLen <= endIndex) {
    return str;
...
StringsubString4lastIndex(String string, String regex)
sub Stringlast Index 
if (isNullOrEmpty(string) || isNullOrEmpty(regex)) {
    return string;
if (string.indexOf(regex) == -1) {
    return string;
return string.substring(string.lastIndexOf(regex) + regex.length());
StringsubstringAfter(final String str, final String separator)
substring After 
if (isEmpty(str)) {
    return str;
if (separator == null) {
    return EMPTY;
final int pos = str.indexOf(separator);
if (pos == INDEX_NOT_FOUND) {
...
StringsubstringAfter(String s, String cs)
substring After 
int idx = s.indexOf(cs);
if (idx >= 0) {
    return s.substring(idx + cs.length());
} else {
    return null;
StringsubstringAfter(String s, String substr, boolean fromend)
Return the string after a given substring 
int p = fromend ? s.lastIndexOf(substr) : s.indexOf(substr);
return (p >= 0) ? s.substring(p + 1) : s;
StringsubstringAfter(String sourceStr, String expr)
substring After 
if (isEmpty(sourceStr) || expr == null) {
    return sourceStr;
if (expr.length() == 0) {
    return sourceStr;
int pos = sourceStr.indexOf(expr);
if (pos == -1) {
...
StringsubstringAfter(String str, int beginChar, boolean last)
substring After 
if (str == null) {
    return null;
if (beginChar < 0) {
    return str;
int idx = (last) ? str.lastIndexOf(beginChar) : str.indexOf(beginChar);
if (idx == -1) {
...
StringsubstringAfter(String str, String delimiter)
substring After 
int indexOf = str.indexOf(delimiter);
return str.substring(indexOf + delimiter.length(), str.length());