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 source, int beginIndex, int endIndex)
Returns a string that is a substring of this string. 
if (beginIndex < 0)
    throw new StringIndexOutOfBoundsException(beginIndex);
if (endIndex > source.length())
    throw new StringIndexOutOfBoundsException(endIndex);
int subLen = endIndex - beginIndex;
if (subLen < 0)
    throw new StringIndexOutOfBoundsException(subLen);
String toreturn = "";
...
Stringsubstring(String source, int length, String padding)
substring 
if (source == null) {
    return "";
String s = source.trim();
char c;
int size = 0;
int count = s.length();
StringBuilder buffer = new StringBuilder();
...
Stringsubstring(String source, int offset, int dataLength)
substring 
StringBuilder sb = new StringBuilder();
if (!isEmpty(source) && source.length() >= offset + dataLength) {
    sb.append(source.substring(offset, offset + dataLength));
return sb.toString();
Stringsubstring(String source, int size)
substring 
return substring(source, 0, size);
Stringsubstring(String source, int startIndex)
substring 
if (source == null)
    return null;
int length = source.length();
if (startIndex < 0)
    startIndex = 0;
if (length < startIndex)
    return "";
else
...
StringsubString(String source, int startIndex, int count)
sub String 
if (source == null || source.equals("")) {
    return null;
if (source.length() - startIndex > count) {
    count = source.length() - startIndex;
if (startIndex <= 0) {
    startIndex = 0;
...
Stringsubstring(String src, int beginIndex, int endIndex)
substring 
if (src.length() < beginIndex)
    return "";
return src.substring(beginIndex, endIndex);
Stringsubstring(String src, int start_idx, int end_idx)
substring 
byte[] b = src.getBytes();
String tgt = "";
for (int i = start_idx; i <= end_idx; i++) {
    tgt += (char) b[i];
return tgt;
StringsubString(String src, int startIndex, int endIndex)
Find substring start by one index end by index 
if ((startIndex == -1) || (endIndex == -1)) {
    return null;
return src.substring(startIndex, endIndex);
StringsubString(String src, String begin, String end)
sub String 
return subString(src, 0, begin, end);