Java Utililty Methods String Whitespace Normalize

String normaliseWhitespace(String string)
normalise Whitespace

StringBuilder sb = new StringBuilder(string.length());
boolean lastWasWhite = false;
boolean modified = false;
int l = string.length();
for (int i = 0; i < l; i++) {
 int c = string.codePointAt(i);
 if (Character.isWhitespace(c)) {
 if (lastWasWhite) {
...

String normaliseWhitespace(String string)
normalise Whitespace

return string == null ? "" : string.replaceAll("\\s+", " ");

String normaliseWhitespace(String string)
Normalise the whitespace within this string; multiple spaces collapse to a single, and all whitespace characters (e.g.

StringBuilder sb = new StringBuilder(string.length());
appendNormalisedWhitespace(sb, string, false);
return sb.toString();

String normalizeIndentationFromWhitespace(String str, int tabSize, boolean insertSpaces)
normalize Indentation From Whitespace

int spacesCnt = 0;
for (int i = 0; i < str.length(); i++) {
 if (str.charAt(i) == '\t') {
 spacesCnt += tabSize;
 } else {
 spacesCnt++;
StringBuilder result = new StringBuilder();
if (!insertSpaces) {
 long tabsCnt = Math.round(Math.floor(spacesCnt / tabSize));
 spacesCnt = spacesCnt % tabSize;
 for (int i = 0; i < tabsCnt; i++) {
 result.append('\t');
for (int i = 0; i < spacesCnt; i++) {
 result.append(' ');
return result.toString();

String normalizeWhitespace(final String str)
Substitutes all whitespace with " "

if (str != null) {
 return str.replaceAll("\\s+", " ");
return "";

String normalizeWhitespace(String dirtyString)
Trim string and convert all multi whitespace regions to a single space.

if (dirtyString == null) {
 return null;
if (dirtyString.length() < 1) {
 return dirtyString;
StringBuffer buff = new StringBuffer();
int dsl = dirtyString.length();
...

String normalizeWhiteSpace(String input)
normalize White Space

return input.replaceAll("\\s+", " ").replaceAll("([^\\w])\\s+", "1ドル");

String normalizeWhiteSpace(String input)
normalize White Space

if (input == null) {
 return null;
StringBuffer result = new StringBuffer();
boolean atStart = true;
boolean whitespaceToInsert = false;
for (int i = 0; i < input.length(); i++) {
 char next = input.charAt(i);
...

String normalizeWhitespace(String orig)
Replace any string of whitespace characters with a single space, and remove whitespace from the beginning and end of the string.

return orig.replaceAll("\\s+", " ").trim();

String normalizeWhitespace(String s)
Removes all leading and trailing whitespace from a string, and replaces all internal whitespace with a single space character.

String normalized = "";
if (s != null) {
 s = s.trim();
 boolean prevIsWhitespace = false;
 for (int i = 0; i < s.length(); i++) {
 char c = s.charAt(i);
 boolean thisIsWhitespace = (c <= 0x20);
 if (!(thisIsWhitespace && prevIsWhitespace)) {
...