Android Utililty Methods String Sub String Get

List of utility methods to do String Sub String Get

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Description

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

Method

Stringleft(String str, int length)
left 
if (str == null) {
    return null;
if (length < 0) {
    return EMPTY;
if (str.length() <= length) {
    return str;
...
Stringright(String str, int length)
right 
if (str == null) {
    return null;
if (length < 0) {
    return EMPTY;
if (str.length() <= length) {
    return str;
...
StringdelSuffix(String str)
del Suffix 
int index = str.lastIndexOf(".");
if (index >= 0) {
    return str.substring(0, index);
} else {
    return str;
StringdeleteLast(String str, int num)
delete Last 
if (str == null)
    return null;
return str.substring(0, str.length() - num);
StringdeleteLastIf(String str, String eq_str)
delete Last If 
if (str == null)
    return null;
if (str.substring(str.length() - eq_str.length(), str.length())
        .equals(eq_str)) {
    return str.substring(0, str.length() - eq_str.length());
} else {
    return str;
StringgetTailorString(String string, int length)
get Tailor String 
if (string == null) {
    return null;
if (string.length() <= length)
    return string;
StringBuilder sb = new StringBuilder(
        string.substring(0, length - 1));
sb.append(".");
...
Stringmid(String str, int beginIndex, int length)
mid 
if (str == null) {
    return null;
if (length < 0 || beginIndex > str.length()) {
    return EMPTY;
if (beginIndex < 0) {
    beginIndex = 0;
...
StringsubStringByByte(String str, int startPos, int length)
sub String By Byte 
if (str == null || str.length() == 0) {
    return "";
StringBuffer sb = new StringBuffer();
int byteLen = 0;
for (int i = 0; i < str.length(); i++) {
    int ascii = Character.codePointAt(str, i);
    if (ascii >= 0 && ascii <= 255) {
...
StringsubStringByByte(String paramString, int beginIndex, int endIndex)
sub String By Byte 
if ((paramString == null) || (paramString.length() == 0)) {
    return "";
if (beginIndex >= endIndex) {
    return "";
int byteLength = 0;
String returnString = "";
...
StringsubString(String source, String start, int offsetStart, String end, int offsetEnd)
Substring 
return source.substring(source.indexOf(start) + offsetStart,
        source.indexOf(offsetEnd) + offsetEnd);