public class URLEncoder extends Object
application/x-www-form-urlencoded MIME
 format. For more information about HTML form encoding, consult the HTML
 specification.
 When encoding a String, the following rules apply:
a" through
     "z", "A" through
     "Z" and "0"
     through "9" remain the same.
 .",
     "-", "*", and
     "_" remain the same.
 +".
 %xy", where xy is the
     two-digit hexadecimal representation of the byte.
     The recommended encoding scheme to use is UTF-8. However,
     for compatibility reasons, if an encoding is not specified,
     then the default encoding of the platform is used.
 For example using UTF-8 as the encoding scheme the string "The string ü@foo-bar" would get converted to "The+string+%C3%BC%40foo-bar" because in UTF-8 the character ü is encoded as two bytes C3 (hex) and BC (hex), and the character @ is encoded as one byte 40 (hex).
| Modifier and Type | Method and Description | 
|---|---|
| static String | encode(String s)Deprecated. 
 The resulting string may vary depending on the platform's
             default encoding. Instead, use the encode(String,String)
             method to specify the encoding. | 
| static String | encode(String s,
      String enc)Translates a string into  application/x-www-form-urlencodedformat using a specific encoding scheme. | 
@Deprecated public static String encode(String s)
x-www-form-urlencoded
 format. This method uses the platform's default encoding
 as the encoding scheme to obtain the bytes for unsafe characters.s - String to be translated.String.public static String encode(String s, String enc) throws UnsupportedEncodingException
application/x-www-form-urlencoded
 format using a specific encoding scheme. This method uses the
 supplied encoding scheme to obtain the bytes for unsafe
 characters.
 Note: The World Wide Web Consortium Recommendation states that UTF-8 should be used. Not doing so may introduce incompatibilities.
s - String to be translated.enc - The name of a supported
    character
    encoding.String.UnsupportedEncodingException - If the named encoding is not supportedURLDecoder.decode(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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