Java Utililty Methods String Unquote

List of utility methods to do String Unquote

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Description

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

Method

Stringunquote(String quoted)
Removes the first and last single or double quotes (if they exist). 
if (quoted != null && quoted.length() >= 2) {
    int len = quoted.length();
    char firstChar = quoted.charAt(0);
    char lastChar = quoted.charAt(len - 1);
    if (firstChar == lastChar && (firstChar == '\'' || firstChar == '"')) {
        return quoted.substring(1, len - 1);
return quoted;
Stringunquote(String quoted)
remove the surrounding quotation mark and restore 2 successive quotation marks to 1 
String content = quoted;
if (quoted.indexOf("'") == 0 && quoted.lastIndexOf("'") == quoted.length() - 1 && quoted.length() > 1) {
    content = quoted.substring(1, quoted.length() - 1).replaceAll("''", "'");
} else if (quoted.indexOf("\"") == 0 && quoted.lastIndexOf("\"") == quoted.length() - 1
        && quoted.length() > 1) {
    content = quoted.substring(1, quoted.length() - 1).replaceAll("\"\"", "\"");
} else if (quoted.indexOf("[") == 0 && quoted.lastIndexOf("]") == quoted.length() - 1
        && quoted.length() > 1) {
...
Stringunquote(String quotedString)
unquote 
if (quotedString == null)
    return quotedString;
if (quotedString.startsWith("\"") && quotedString.endsWith("\"")) {
    return quotedString.substring(1, quotedString.length() - 1);
return quotedString;
Stringunquote(String s)
Remove single or double quotes. 
if ((s.startsWith("\"") && s.endsWith("\"")) || (s.startsWith("'") && s.endsWith("'")))
    s = s.substring(1, s.length() - 1);
return s;
Stringunquote(String s)
unquote 
if (s.length() >= 6 && s.charAt(0) == s.charAt(1)) {
    s = s.replace('\u0000', '\n');
    return s.substring(3, s.length() - 3);
} else {
    return s.substring(1, s.length() - 1);
Stringunquote(String s)
Unquote the given string and replace escape sequences by the original characters. 
char[] in = s.toCharArray();
char[] out = new char[in.length];
boolean inEscape = false;
int k = 0;
int n = in.length;
for (int i = 0; i < n; i++) {
    if (inEscape) {
        switch (in[i]) {
...
Stringunquote(String s)
unquote 
StringBuilder buf = new StringBuilder();
int i = s.length();
boolean quoted = false, escaped = false;
for (int n = 0; n < s.length(); n++) {
    char c = s.charAt(n);
    if (n == 0 && c == '"') {
        quoted = true;
    } else if (!(quoted && n + 1 == i && !escaped && c == '"'))
...
Stringunquote(String s)
unquote 
if (s == null || s.length() == 0)
    return s;
if (s.startsWith("\""))
    s = s.substring(1);
if (s.endsWith("\""))
    s = s.substring(0, s.length() - 1);
return s;
Stringunquote(String s)
unquote 
if (s == null) {
    return "";
if (startsWith(s, "'")) {
    return unwrap(s, "'", "'");
} else if (startsWith(s, "\"")) {
    return unwrap(s, "\"", "\"");
return s.trim();
Stringunquote(String s)
Unquote a string. 
if (s == null) {
    return null;
if (s.length() < 2) {
    return s;
char first = s.charAt(0);
char last = s.charAt(s.length() - 1);
...