Java Utililty Methods Java String Unescape

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': {
...

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;
...

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

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);
...

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');
...

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

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;
...

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);
...