Java Utililty Methods String Sub String

List of utility methods to do String Sub String

  1. HOME
  2. Java
  3. S
  4. String Sub String

Description

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

Method

byte[]substring(byte[] array, int start)
substring 
return substring(array, start, array.length);
byte[]substring(byte[] src, int start, int len)
substring 
byte[] res = new byte[len];
System.arraycopy(src, start, res, 0, len);
return res;
char[]substring(char[] s, int start, int end)
substring 
char[] result = new char[end - start];
for (int i = 0; i < result.length; i++) {
    result[i] = s[start + i];
return result;
Stringsubstring(final String pSource, final String pBeginBoundaryString, final String pEndBoundaryString, final int pOffset)
Gets the first substring between the given string boundaries. 
int offset = (pOffset < 0) ? 0 : pOffset;
int startIndex = pSource.indexOf(pBeginBoundaryString, offset) + pBeginBoundaryString.length();
if (startIndex < 0) {
    return null;
int endIndex = pSource.indexOf(pEndBoundaryString, startIndex);
if (endIndex < 0) {
    return null;
...
Stringsubstring(final String s, int start)

Gets a substring from the specified String avoiding exceptions. 

if (s == null) {
    return null;
if (start < 0) {
    start = s.length() + start; 
if (start < 0) {
    start = 0;
...
Stringsubstring(final String s, int start, int end)
Equal to String#substring(int,int) , but allows negative indices that are counted from the end of the string. 
if (start < 0)
    start = start + s.length();
if (end < 0)
    end = end + s.length();
if (end < start)
    throw new IllegalArgumentException("invalid indices");
return "" + s.substring(start, end);
Stringsubstring(final String s, int startIndex, int endIndex)
a 'safe' @link String#substring(int,int) that does not throw exceptions when indexes are false. 
startIndex = Math.min(s.length(), Math.max(0, startIndex));
endIndex = Math.min(s.length(), Math.max(0, endIndex));
return s.substring(Math.min(startIndex, endIndex), Math.max(startIndex, endIndex));
Stringsubstring(final String str, int start, int end)
From commonslang3 -> StringUtil

Gets a substring from the specified String avoiding exceptions.

A negative start position can be used to start/end n characters from the end of the String.

The returned substring starts with the character in the start position and ends before the end position. 

if (str == null) {
    return null;
if (end < 0) {
    end = str.length() + end; 
if (start < 0) {
    start = str.length() + start; 
...
Stringsubstring(final String string, int fromIndex, int toIndex)
substring 
final int len = string.length();
if (fromIndex < 0) {
    fromIndex += len;
    if (toIndex == 0) {
        toIndex = len;
if (toIndex < 0) {
...
Stringsubstring(final String text, final int position, final int length)
Return substring of text. 
final int start = Math.max(0, position);
int l = position + length - start;
if (l <= 0) {
    return "";
int end = start + l;
if (end < text.length()) {
    return text.substring(start, end);
...