Java Utililty Methods URL Decode

List of utility methods to do URL Decode

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Description

The list of methods to do URL Decode are organized into topic(s).

Method

StringparseStringParamAndDecode(String inParam, String defaultVal, String charset)
Parses and decodes and Sanitize the given inParam 
if (inParam == null) {
    return defaultVal;
try {
    return parseStringParam(URLDecoder.decode(inParam, charset), defaultVal);
} catch (UnsupportedEncodingException e) {
    return defaultVal;
StringpathDecode(String path)
path Decode 
if (path != null) {
    path = path.replace("+", "%2b");
    path = URLDecoder.decode(path, "UTF-8");
return path;
StringpathDecode(String path)
path Decode 
return URLDecoder.decode(path, "UTF-8");
StringpercentDecode(String encodedString, String messageEncoding)
Percent decodes a string 
try {
    return URLDecoder.decode(encodedString, messageEncoding);
} catch (UnsupportedEncodingException uee) {
    uee.printStackTrace();
return null;
StringpercentDecode(String str, boolean plusToSpace)
Decodes strings that have been percent encoded. 
char[] buf = null;
int count = 0; 
final int len = str.length();
for (int i = 0; i < len;) {
    char c = str.charAt(i);
    if (c == '%') {
        if (i + 2 >= len) {
            throw new IllegalArgumentException();
...
StringsafeDecode(String s)
safe Decode 
try {
    return URLDecoder.decode(s, "UTF-8");
} catch (UnsupportedEncodingException e) {
    e.printStackTrace();
    return s;
Stringunescape(String s)
unescape UTF8/URL encoded strings 
try {
    return URLDecoder.decode(s, "UTF-8");
} catch (Exception e) {
    return s;
Stringunescape(String string)
Does a URL decoding of the string. 
return unescape(string, '%');
Stringunescape(String theString)
unescape 
if (theString == null) {
    return null;
for (int i = 0; i < theString.length(); i++) {
    char nextChar = theString.charAt(i);
    if (nextChar == '%' || nextChar == '+') {
        try {
            return URLDecoder.decode(theString, "UTF-8");
...
StringurlDecode(String s)
This utility method is for converting from a MIME format called "x-www-form-urlencoded" to a String

To convert to a String, each character is examined in turn:

  • The ASCII characters 'a' through 'z', 'A' through 'Z', and '0' through '9' remain the same. 
    StringBuffer sb = new StringBuffer();
for (int i = 0; i < s.length(); i++) {
    char c = s.charAt(i);
    switch (c) {
    case '+':
        sb.append(' ');
        break;
    case '%':
...