Java Utililty Methods String Sanitize

List of utility methods to do String Sanitize

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Description

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

Method

StringsanitizeString(final String s)
sanitize String 
if (s == null) {
    return "";
} else {
    return s.trim();
StringsanitizeString(String dirtyString)
sanitize String 
StringBuilder sb = new StringBuilder(dirtyString.length());
for (int i = 0; i < dirtyString.length(); i++) {
    if (!Character.isIdentifierIgnorable(dirtyString.charAt(i))) {
        sb.append(dirtyString.charAt(i));
return sb.toString();
StringsanitizeString(String input)
sanitize String 
if (input != null) {
    char[] docCharArray = input.toCharArray();
    replaceInvalidXmlChars(docCharArray);
    return String.valueOf(docCharArray);
return input;
StringsanitizeString(String s)
Removes newlines and tabs from a string 
String n = null;
if (s != null) {
    n = s.replaceAll("\t", "");
    n = n.replaceAll("\n", "");
return n;
StringsanitizeString(String s)
Clean any XML from the string 
return s.replace("<", "").replace(">", "").replace("/>", "");
StringsanitizeString(String s)
sanitize String 
StringBuilder sb = new StringBuilder();
for (char c : s.toCharArray()) {
    if (c < 0x20) {
        sb.append(" ");
    } else {
        sb.append(c);
return sb.toString().trim();
StringsanitizeString(String str)
Escapes all escapable characters in a string. 
String newStr = "";
boolean escape = false;
for (int i = 0; i < str.length(); i++) {
    char c = str.charAt(i);
    if (escape) {
        switch (c) {
        case '\\':
            newStr += "\\";
...
StringsanitizeStringAsLiteral(String literal)
Sanitize a String for use in a SQL statement 
if (literal == null) {
    return "NULL";
String sanitizedLiteral = literal.replace("'", "''");
int nullIndex = sanitizedLiteral.indexOf('\0');
if (nullIndex >= 0) {
    StringBuilder builder = new StringBuilder();
    int start = 0;
...
StringsanitizeStringForXPath(String text)
Convert the string to a safer version for XPath For example: Will o' The Wisp => concat('Will o' , "'" , ' The Wisp' , '') This will result in the same string when read by XPath. 
StringBuilder result = new StringBuilder();
int startOfChain = 0;
int textLength = text.length();
boolean isSingleQuotationChain = false;
for (int currentPos = 0; currentPos <= textLength; currentPos++) {
    boolean isChainBroken = currentPos >= textLength
            || isSingleQuotationChain && text.charAt(currentPos) != '\''
            || !isSingleQuotationChain && text.charAt(currentPos) == '\'';
...
StringsanitizeStringLiteral(String inputString)
Removes first and last character, assuming they're simple (') or double quotes (") 
if (inputString != null && inputString != "") {
    if (inputString.charAt(0) == '"' && inputString.charAt(inputString.length() - 1) == '"'
            || inputString.charAt(0) == '\'' && inputString.charAt(inputString.length() - 1) == '\'') {
        if (inputString.length() > 2)
            inputString = inputString.substring(1, inputString.length() - 1);
        else
            inputString = "";
return inputString;