public class URLDecoder extends Object
application/x-www-form-urlencoded
 MIME format.
 
 The conversion process is the reverse of that used by the URLEncoder class. It is assumed
 that all characters in the encoded string are one of the following:
 "a" through "z",
 "A" through "Z",
 "0" through "9", and
 "-", "_",
 ".", and "*". The
 character "%" is allowed but is interpreted
 as the start of a special escaped sequence.
 
The following rules are applied in the conversion:
a" through
     "z", "A" through
     "Z" and "0"
     through "9" remain the same.
 .",
     "-", "*", and
     "_" remain the same.
 +" is converted into a
     space character "   " .
 %xy" will be
     treated as representing a byte where xy is the two-digit
     hexadecimal representation of the 8 bits. Then, all substrings
     that contain one or more of these byte sequences consecutively
     will be replaced by the character(s) whose encoding would result
     in those consecutive bytes.
     The encoding scheme used to decode these characters may be specified,
     or if unspecified, the default encoding of the platform will be used.
 
 There are two possible ways in which this decoder could deal with
 illegal strings.  It could either leave illegal characters alone or
 it could throw an IllegalArgumentException.
 Which approach the decoder takes is left to the
 implementation.
| Constructor and Description | 
|---|
| URLDecoder() | 
| Modifier and Type | Method and Description | 
|---|---|
| static String | decode(String s)Deprecated. 
 The resulting string may vary depending on the platform's
          default encoding. Instead, use the decode(String,String) method
          to specify the encoding. | 
| static String | decode(String s,
      String enc)Decodes a  application/x-www-form-urlencodedstring using a specific
 encoding scheme. | 
@Deprecated public static String decode(String s)
x-www-form-urlencoded string.
 The platform's default encoding is used to determine what characters
 are represented by any consecutive sequences of the form
 "%xy".s - the String to decodeStringpublic static String decode(String s, String enc) throws UnsupportedEncodingException
application/x-www-form-urlencoded string using a specific
 encoding scheme.
 The supplied encoding is used to determine
 what characters are represented by any consecutive sequences of the
 form "%xy".
 Note: The World Wide Web Consortium Recommendation states that UTF-8 should be used. Not doing so may introduce incompatibilities.
s - the String to decodeenc - The name of a supported
    character
    encoding.StringUnsupportedEncodingException - If character encoding needs to be consulted, but
             named character encoding is not supportedURLEncoder.encode(java.lang.String, java.lang.String) Submit a bug or feature 
For further API reference and developer documentation, see Java SE Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.
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