Review/comment needed for the new public java.util.Base64 class
xueming.shen at oracle.com
Wed Oct 10 10:54:37 PDT 2012
A standard/public API for Base64 encoding and decoding has been long
overdue. JDK8 has a JEP  for this particular request.
Here is the draft proposal to add a public Base64 utility class for JDK8.
This class basically provides 4 variants of Base64 encoding scheme,
(1) the default RFC 4648, which uses standard mapping, no line breaks,
(2) the URL-safe RFE 4648, no line breaks, use "-" and "_" to replace
"/" for the mapping
(3) the default MIME style, as in RFC 2045 (and its earlier versions),
"standard" base64 mapping, a 76 characters per line limit and uses
\r\n for line break.
(4) an extend-able MIME base64, with the char-per-line and the line
specified by developer.
The encoder/decoder now provides encoding and decoding for byte, String,
ByteBuffer and a pair of "EncoderInputStream" and "DecoderOutputStrream",
which we believe/hope should satisfy most of the common use cases.
method(s) can be added if strongly desired.
We tried couple slightly different styles of design for such this
class . We kinda concluded that the version proposed probably provides
the best balance among readability, usability and extensibility.
Please help review and comment on the API and implementation.
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