Android Utililty Methods String Trim

List of utility methods to do String Trim

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Description

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

Method

Stringrtrim(final String text, String trimText)
rtrim 
if (text == null) {
    return null;
if (trimText == null) {
    trimText = " ";
int pos = text.length() - 1;
for (; pos >= 0; pos--) {
...
StringtrimSuffix(final String text, final String suffix)
trim Suffix 
if (text == null) {
    return null;
if (suffix == null) {
    return text;
if (text.endsWith(suffix)) {
    return text.substring(0, text.length() - suffix.length());
...
StringtrimPrefix(final String text, final String prefix)
trim Prefix 
if (text == null) {
    return null;
if (prefix == null) {
    return text;
if (text.startsWith(prefix)) {
    return text.substring(prefix.length());
...
StringtrimSpace(String oldString)
Method trim space 
if (null == oldString)
    return null;
if (0 == oldString.length())
    return "";
StringBuffer sbuf = new StringBuffer();
int oldLen = oldString.length();
for (int i = 0; i < oldLen; i++) {
    if (' ' != oldString.charAt(i))
...
intrightTrimSize(String s)
Returns the size of substring that does not contain any trailing spaces 
int i = s.length();
while (i > 0) {
    i--;
    if (s.charAt(i) != ' ') {
        return i + 1;
return 0;
...
Stringtrim(String s, char c)
Removes characters 'c' from the beginning and the end of the string 
int start = 0;
int end = s.length() - 1;
while (s.charAt(start) == c) {
    if (++start >= end) {
        return "";
while (s.charAt(end) == c) {
...
Stringtrim(String trimStr, String trimChars)
trim 
int spIdx = findFirstNotOf(trimStr, trimChars);
if (spIdx < 0) {
    String buf = trimStr;
    return buf;
String trimStr2 = trimStr.substring(spIdx, trimStr.length());
spIdx = findLastNotOf(trimStr2, trimChars);
if (spIdx < 0) {
...
StringtrimEnd(String s, String extraChars)
Trim characters from only the end of a string. 
int trimCount = 0;
while (trimCount < s.length()) {
    char ch = s.charAt(s.length() - trimCount - 1);
    if (Character.isWhitespace(ch)
            || (extraChars != null && extraChars.indexOf(ch) >= 0)) {
        trimCount++;
    } else {
        break;
...
StringtrimStart(String s, String extraChars)
Trim characters from only the beginning of a string. 
int trimCount = 0;
while (trimCount < s.length()) {
    char ch = s.charAt(trimCount);
    if (Character.isWhitespace(ch)
            || (extraChars != null && extraChars.indexOf(ch) >= 0)) {
        trimCount++;
    } else {
        break;
...
StringbetterTrim(String input)
better Trim 
input = input.trim();
if (input.length() == 0) {
    return input;
boolean didChange;
do {
    String oldInput = input;
    char firstChar = input.charAt(0);
...