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

StringurlDecode(String scope)
Performs url decoding. 
StringBuffer result = new StringBuffer();
for (int i = 0; i < scope.length(); ++i) {
    char c = scope.charAt(i);
    if (c == '+') {
        result.append(' ');
    } else if (c == '%' && i + 2 < scope.length()) {
        int start = i + 1;
        String h = scope.substring(start, start + 2);
...
StringURLDecode(String str)
Decode and return the specified URL-encoded String. 
return URLDecode(str, null);
Stringurldecode(String str)
The opposite function of urlencode(). 
int len = str.length();
StringBuffer newstr = new StringBuffer(len);
for (int i = 0; i < len; i++) {
    if (str.charAt(i) == '+') {
        newstr.append(' ');
    } else if (str.charAt(i) == '%') {
        newstr.append(dd2c(str.charAt(i + 1), str.charAt(i + 2)));
        i += 2;
...
StringurlDecode(String str)
url Decode 
str = str.replace('_', '/').replace('-', '+');
return str;
StringurlDecode(String text)
url Decode 
StringBuilder b = new StringBuilder();
for (int i = 0; i < text.length(); ++i) {
    char ch = text.charAt(i);
    if (ch == '%' && i + 2 < text.length()) {
        String num = text.substring(i + 1, i + 3);
        try {
            int val = Integer.valueOf(num, 16);
            if (val >= 0x20 && val < 0x7F) {
...
byte[]urlDecodeBytes(String key)
url Decode Bytes 
byte[] bs = new byte[key.length() / 2];
for (int i = 0; i < key.length() / 2; i++) {
    bs[i] = (byte) (((int) unHex(key.substring(i * 2, i * 2 + 2))) - 128);
return bs;
StringurlDecodeFilename(char[] input)
This method encodes the URL, removes the spaces and brackets from the URL and replaces the same with "%20" and "%5B" and "%5D" and "%7B" "%7D". 
if (input == null) {
    return null;
StringBuffer retu = new StringBuffer(input.length);
for (int i = 0; i < input.length; i++) {
    if (input[i] != '%' || i + 2 >= input.length) {
        retu.append(input[i]);
    } else {
...
voidurlDecodeInplace(StringBuilder input)
url Decode Inplace 
urlDecodeInto(input, 0, input.length(), input, true);
StringurlDecoder(String encoded)
url Decoder 
StringBuffer decoded = new StringBuffer();
int len = encoded.length();
for (int i = 0; i < len; ++i) {
    if (encoded.charAt(i) == '%' && i + 2 < len) {
        int d1 = Character.digit(encoded.charAt(i + 1), 16);
        int d2 = Character.digit(encoded.charAt(i + 2), 16);
        if (d1 != -1 && d2 != -1)
            decoded.append((char) ((d1 << 4) + d2));
...
StringxmlDecode(String s)
Decodes reserved characters in an xml string 
if (s == null)
    return s;
try {
    return URLDecoder.decode(s, "UTF-8");
} catch (UnsupportedEncodingException uee) {
    return s;