Java Utililty Methods Java String Unescape

String unescapeJava(final String s)
unescape java strings well enough for our purposes.

final StringBuilder b = new StringBuilder();
final int n = s.length();
for (int i = 0; i < n;) {
 final char c = s.charAt(i++);
 if (c == '\\' && i < n) {
 final char e = s.charAt(i++);
 switch (e) {
 case 'u': {
...

String unescapeJava(final String str)
unescape Java

final char[] chars = str.toCharArray();
final StringBuilder sb = new StringBuilder(str.length());
for (int i = 0; i < chars.length; ++i) {
 char c = chars[i];
 if (c != '\\') {
 sb.append(c);
 } else {
 ++i;
...

String unescapeJava(final String str)
Unescape java.

if (str == null) {
 return null;
StringBuilder writer = new StringBuilder(str.length());
unescapeJava(writer, str);
String result = writer.toString();
writer.setLength(0);
return result;
...

String unescapeJava(String escaped)
unescape Java

if (escaped.indexOf("\\u") == -1)
 return escaped;
String processed = "";
int position = escaped.indexOf("\\u");
while (position != -1) {
 if (position != 0)
 processed += escaped.substring(0, position);
 String token = escaped.substring(position + 2, position + 6);
...

String unescapeJava(String s)
Turns a printable Java string literal (minus the quotes) into a string.

final int sLength = s.length();
final StringBuilder result = new StringBuilder(sLength);
for (int i = 0; i < sLength; ++i) {
 final char c = s.charAt(i);
 if (c == '\\' && i < sLength - 1) {
 char next = s.charAt(++i);
 if (next == 'n') {
 result.append('\n');
...

String unescapeJava(String str)

Unescapes any Java literals found in the String to a Writer.

This is a slightly modified version of the StringEscapeUtils.unescapeJava() function in commons-lang that doesn't drop escaped separators (i.e ',円').

if (str == null) {
 return null;
int sz = str.length();
StringBuffer out = new StringBuffer(sz);
StringBuffer unicode = new StringBuffer(UNICODE_LEN);
boolean hadSlash = false;
boolean inUnicode = false;
...

String unescapeJava(String value)
unescape Java

if (value == null || value.length() == 0) {
 return value;
StringBuilder buf = null;
int len = value.length();
int len1 = len - 1;
for (int i = 0; i < len; i++) {
 char ch = value.charAt(i);
...