Java Utililty Methods HTML Escape

List of utility methods to do HTML Escape

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Description

The list of methods to do HTML Escape are organized into topic(s).

Method

StringhtmlEscape(String S)
html Escape 
if (null == S) {
    return S;
int N = S.length();
StringBuilder sb = new StringBuilder(N);
for (int i = 0; i < N; i++) {
    char c = S.charAt(i);
    if (c == '&') {
...
StringhtmlEscape(String s)
Turn special characters into HTML character references. 
if (s == null) {
    return null;
StringBuffer escaped = new StringBuffer(s.length());
for (int i = 0; i < s.length(); i++) {
    char c = s.charAt(i);
    if ((c >= 0 && c <= 33) || (c >= 35 && c <= 37) || (c >= 39 && c <= 59) || (c == 61)
            || (c >= 63 && c <= 159)) {
...
Stringhtmlescape(String s)
Turns funky characters into HTML entity equivalents

e.g. 

if (s == null)
    return "";
StringBuffer buf = new StringBuffer();
int n = s.length();
for (int i = 0; i < n; ++i) {
    char ch = s.charAt(i);
    String entity = (String) i2e.get(Integer.valueOf(ch));
    if (entity == null) {
...
StringhtmlEscape(String source)
Turns funky characters into HTML entity equivalents.

E.g. 

StringBuffer buf = new StringBuffer();
if (source != null) {
    for (int i = 0; i < source.length(); ++i) {
        char ch = source.charAt(i);
        String entity = (String) i2e.get(new Integer((int) ch));
        if (entity == null) {
            if (((int) ch) > 128)
                buf.append("&#" + ((int) ch) + ";");
...
StringhtmlEscape(String str)
html Escape 
StringBuilder esc = new StringBuilder();
for (int i = 0; i < str.length(); ++i) {
    final char c = str.charAt(i);
    switch (c) {
    case '<':
        esc.append("&lt;");
        break;
    case '>':
...
StringhtmlEscape(String str)
Escape ampersands and less-than characters in a string using HTML-style &amp; and &lt; constructs. 
String rval = "";
String s = str;
while (true) {
    int ix1 = s.indexOf((int) '&');
    int ix2 = s.indexOf((int) '<');
    if (ix1 < 0 && ix2 < 0) {
        break;
    int ix;
    if (ix1 < 0) {
        ix = ix2;
    } else if (ix2 < 0) {
        ix = ix1;
    } else {
        ix = ix1 < ix2 ? ix1 : ix2;
    rval += s.substring(0, ix);
    s = s.substring(ix);
    if (s.startsWith("&")) {
        rval += "&amp;";
    } else {
        rval += "&lt;";
    s = s.substring(1);
rval += s;
return rval;
StringhtmlEscape(String str)
html Escape 
return str.replace(">", "&gt;").replace("<", "&lt;").replace("&", "&amp;");
StringhtmlEscape(String string)
html Escape 
StringBuilder builder = new StringBuilder();
for (int i = 0; i < string.length(); i++) {
    char nonEscaped = string.charAt(i);
    String escaped = charToHtmlEntity(nonEscaped);
    if (escaped == null)
        builder.append(nonEscaped);
    else
        builder.append(escaped);
...
StringhtmlEscape(String tag)
Replace characters having special meaning inside HTML tags with their escaped equivalents, using character entities such as '&'. 
final StringBuffer result = new StringBuffer();
if (tag == null) {
    return null;
} else {
    for (int i = 0; i < tag.length(); i++) {
        char character = tag.charAt(i);
        if (character == '<') {
            result.append("&lt;");
...
StringhtmlEscape(String text)
Performs necessary escaping to render arbitrary plain text as plain text without any markup. 
StringBuilder buf = new StringBuilder(text.length() + 64);
for (int i = 0; i < text.length(); i++) {
    char ch = text.charAt(i);
    if (ch == '<')
        buf.append("&lt;");
    else if (ch == '&')
        buf.append("&amp;");
    else
...